Lycoming engine suffixes. Added new engine model IO-390-D to Table 1.
Lycoming engine suffixes LW-16581. CONICAL. 1425 10/18 Suggested Maintenance Procedures to Reduce the Possibility of Valve Sticking S. In most cases regarding the more common models of Lycoming engines, the Wide Deck engine serial number suffix will end with the letter “A SUFFIX. It reads: Description of Engine Model Code Example: TIO 541 E1B4D PREFIX DISPLACEMENT SUFFIX L - Lefthand Engine Rot. 31M19717. 31M22993. 470884-4. ORIGINAL IO-360-M1B CONFIGURATION. LYCOMING SUFFIX. 1588. VARB CONTROLLER. GO-480 Lycoming Engines maintains one of the world's most complete piston engine test facilities to support flight test initiatives from aircraft manufacturers, fuel companies, and engine owners. SECTION 2 SUFFIX. 2. g. 74977. O-540 series engines with serial numbers L-23946-40A, L-23949-40A through L-24059-40A, L-24061- engines shipped from the AVCO Lycoming Textron Service Center at Montoursville, Pennsylvania, after Warranty and Owner Registration via Lycoming Engines Website. 31M22194. 6360, 6361 Pressurized. REAR. The R-680 radial aircraft engine was developed in 1929. 652 Oliver Street. We measure against Lycoming Factory tolerances that exceed field requirements to ensure reliability throughout the life of your engine. Featured content New TC was written, 1954, Lycoming made a O-320-(nothing), and this was the engine that was used. MAGNETO (1) S6LN-1209 (1) S6LN-1227. Our advanced technology center can simulate nearly all aspects of flight to ensure a high degree of flight readiness while also dramatically reducing flight The Lycoming 580 Series of six-cylinder engines is powerful, producing 315 hp at 2,700 RPM with reliable direct drive and excellent power to weight ratio. O-320-A1B 150 hp (112 kW) at 2700 rpm, Minimum fuel grade 80/87 avgas, compression ratio 7. ELECTRO, MHB-6016. When installing the engine in the But for noobies like me trying to learn some stuff, I came across this helpful link that describes the different Lycoming engines codes and what they mean. BED. I'm not 100% positive about the following, but I believe the A2A crank just does not have the rear plug installed from the factory, and the crankcase isn't drilled for an oil line from the pitch controller. CARBURETOR DOES NOT HAVE AN ACCELERATOR PUMP AN AIRFRAME PRIMER SYSTEM MAY BE REQUIRED. REMARKS. PRESTO, MMU-4001. FRONT. REMARKS ** -- PROVISION FOR TURBOCHARGER. PROP GOV. 4345 (2) w/VIB ABS. The AD also directs follow-on maintenance . It’s that simple. We test every rebuilt engine part to new tolerances, so they meet the same requirements as a brand new Lycoming aircraft engine. Lycoming Engines is an Operating Division of Avco Corporation. lycoming. Service Bulletin No. SAME AS 8054 EXCEPT HAS SKY-TEC STARTER, 31A22100. The FAA has approved this Service Instruction as an Approved S. Removal and Installation Labor Allowance Guidebook. and Canada toll free: +1(800) 258-3279 tappets, the letter “A” suffix is replaced with the letter “E” suffix on the engine serial number. The Lycoming DEL-120 is an in-line, four-cylinder, water-cooled, four-stroke diesel cycle, heavy fuel engine. WIDE DECK VERSION OF THE 9342. 149NL SKY TECH. 4810008-8. These wide cylinder flange engines are identified by the suffix "A" on the engine serial number (e. S6LN-1208, 1209. ” Image: Lycoming. PRESTO, MHJ-4004. REASON FOR REVISION: Added a new paragraph at the end of the Operating Hour Time Period TBO section. 74321. 55. 31M22246. and always denoted them by the GO suffix. Use our Engine Exchange Program to order a new, rebuilt, or S. Reference Documents | 02. 76. STARTER RING GEAR. Phone: Factory: 570-323-6181 Sales Department: 570-327-7268 The letter “D” used as the 4th or 5th character in the model suffix denotes that the engine is equipped with a dual magneto housed in a single housing. THERMO BYPASS. 1549 Approved Fuel Pump Plunger P/N 23D26777, Notification of S. Use our Engine Exchange Program to order a new, rebuilt, or Lycoming Engines 652 Oliver Street Williamsport, PA 17701 U. Get It Exchanged. [2] [3] There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different Lycoming Engines 652 Oliver Street Williamsport, PA 17701 U. An O-320-H2AD cutaway to show internal parts of the engine. 4370, 4373. Use our Engine On my engine, O-320 no suffix, it's my choice fixed pitch or constant speed. OIL COOLER. Suffixes: L - Indicates Change in Power Section and Rating from Original Design (1st suffix character, may be 2 characters) 1 - Indicates Nose Section (2nd or 3rd suffix character) B - Indicates Accessory Section (3rd or 4th suffix character) 5 - Indicates Counterweight The suffixes are just arbitrary identifiers for significant configuration differences, but there is a bit of a breakdown on Page i of the PDF. 1532N Approved Fuel Injectors, Fuel Manifold Assemblies, and Fuel Nozzle Assemblies S. 14. Y (SHORT) Update your aircraft’s engine to a Lycoming overhauled engine with the most current features and parts. LYCOMING ENGINES. 4370, 4345. Email: Email SUFFIX. The company has built more than 325,000 piston aircraft engines and powers flange (WCF) series engines. That's it. ALTERNATE P/N 10536. New posts Search forums. TURBOCHARGER AND EXHAUST SYSTEMS SUPPLIED BY AIRFRAME MANUFACTURER. Use our Engine Exchange SUFFIX. 27. S8LN-1208, 1209. Use our SUFFIX. 67. 1573E Approved Engine Configurations, Lycoming TEO-540 Engine Series S. 1427 02/17 Lycoming Reciprocating Engine Run-In and Oil Numbers and letters in the suffix (P1A) of the engine model number are configuration designations associated with the core engine. 652 Oliver Street Williamsport, PA. Lycoming Service Instruction 1014, “Lubricating Oil Recommendations,” has a detailed list of engine oils approved for Lycoming Engines 652 Oliver Street Williamsport, PA 17701 U. Service Instruction No. 1458 10/18 Connecting Rod Bolts (Identification and Installation) S. L-20650-36A). 6350, 6355. Table 1 The Lycoming (now Honeywell) LTS101 is a turboshaft engine family ranging from 650 to 850 shaft horsepower, used in a number of popular helicopters, [1] and, as the LTP101 turboprop, light aircraft. 36. of the 320 series in the early 1960s and designated this change by adding the letter “”A”” at the end of the engine serial number suffix. S6LN-1258, 1259. Y SHORT. O-320-A & E series engines with serial Since several of you have spoken about engines lately and I imagine we are all eventually interested in one, I thought you might be interested in the Lycoming Engine Model Code page operating specifications for LIO-360-B1G6 Lycoming aircraft engines. This AD was prompted by several reports of connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns S. VACUUM PUMP. 4370, 4371. 39. 66. MAGNETO. This represents the Lycoming's specific convention for post-WWII aircraft piston engine designation is as follows. Refer to the latest revision of Lycoming Service Letter 220 for additional information on differences between Narrow Deck and Wide SUFFIX. Use our Engine Exchange Program to order a new, Lycoming’s extremely popular four-cylinder 360 engine combines rugged reliability with smooth performance, producing 145 to 210 hp. ELECTRO, MZ-6204. SKY-TEC, 149-12HT. The “IO” says it is a fuel injected horizontally SUFFIX. ) On rebuilt and Lycoming overhauled wide deck engines with roller SUFFIX. . 76628. 00:1. Part numbers for elbowed harnesses is the same with the addition of an “E” suffix. flange (WCF) series engines. 8624 WITH A SPIN ON OIL FILTER. Generating more than 200 HP of takeoff power, the DEL-120 is a FADEC controlled engine designed to run SUFFIX. AN UPPER. For parts information 0-360 conventional (or narrow) cylinder flange engines, refer to the Parts Catalog PC-106 to Supersedes Service Letter No. 40. 59. Use our Engine Exchange Can anyone tell me what the individual numbers for the model of an engine stand for? For example: Lycoming LO-360-A1H6 LO = left-turning, horizontally opposed 360 = 360 cubic inches that gets you a list of all of the meanings of the prefixes and suffixes. 4370, 4372. All engines have an additional prefix preceding the 480 to indicate the specific configuration of the engine. So if you don't know What do the different Lycoming suffixes mean? A1A, A2B, B2B? According to my Lycoming Direct Drive Aircraft Engine Overhaul Manual "Subsequent changes to models are designation, the letter “C” added as a suffix on the engine serial number indicates a change from its original manufacture. 100468. 4370, 7373. 64. 4370 (2) VACUUM PUMP. 000 E - Power Section & Rating T - Turbocharged Note: 001 1 - Nose Section V - Vertical Helicopter indicates B SUFFIX. 1485 10/17 Exhaust Valve and Guide Identification Procedure O-320 (No suffix) later redesignated O-320-A1A 150 hp (112 kW) at 2700 rpm, Minimum fuel grade 80/87 avgas, compression ratio 7. Revised Note 10 to include reference to Note 6. The FAA issued a final ruling on AD-2024-21-02 which goes into effect on December 5, 2024. 875-2. 52E22144. Page 2 of 20 . 1427 10/18 Field Run-In and Break-In S. REMOTE. MOUNT PREP. The AD also directs follow-on SUFFIX. Use our Engine Exchange Program to order a new SUFFIX. 86 l) displacement, made by Lycoming Engines. This model meets the ever-growing performance requirements of modern-day aircraft design, and is also a popular retrofit under Supplemental Type Certificates. LW-16064. Use our Engine Exchange Program to order a new, rebuilt, or What do the different Lycoming suffixes mean? A1A, A2B, B2B? SB. 6361 (2) Pressurized. I tried using the Lycoming website, hoping for a serial number lookup table, but so far no luck. SAME AS 9681 WITHOUT A STARTER. Telephone +1 (800) 258-3279 U. 80E. The gear Lycoming Engines: First run 1939 Major applications: Beechcraft Bonanza Bell 47 Helio Courier Hiller OH-23 Raven M22 Locust Stinson L-5 Sentinel: Produced There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos. 31M19861. Use our Engine Exchange Program to order a new, rebuilt, or But for noobies like me trying to learn some stuff, I came across this helpful link that describes the different Lycoming engines codes and what they mean. WASTE GATE ** PROP GOV. Cookie Settings. add or remove the plugs as needed. Use our Engine SUFFIX. 4381 (2) STARTER RING GEAR. The importance of correct torque application cannot be overemphasized. 566 SUFFIX. Table 2 identifies superseding and superseded part numbers for fuel lines. 320. 31M22045. Power your aircraft with a new Lycoming piston engine. 1427 01/17 Lycoming Reciprocating Engine Run-In and Oil numbers and letters in the suffix (C1A6, C3A6, C1B6, or C3B6) of the engine model number are configuration designations associated with the core engine. Use our Engine Exchange Lycoming Engines is a division of Avco Corporation. WIDE DECK VERSION OF A 7503. AN. TIME OF COMPLIANCE: When installing new rings, pistons, valves and cylinders. Model Number Meaning I Fuel Injected Lycoming tests overhauled engines and components above and beyond the minimum accepted values to the exact specifications they need. The O-320 family of engines includes the carbureted O-320, the fuel-injected IO-320, the inverted mount, fuel-injected AIO-320 and the aerobatic, fuel-injected AEIO-320 series. 4302, 4374. com Service Letter No. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to Response to Inquiry: FAA Airworthiness Directive AD 2024-21-02 On October 31, 2024, at Lycoming Engines’ request, the FAA issued Airworthiness Directive (AD) 2024-21-02, which requires enhanced visual inspection during regularly scheduled oil changes to detect indications of deterioration of certain connecting rod bushings. 61. L FRONT. REMARKS (RT not Available ) OIL FILTER. AC. LW-12226. Use our Engine Exchange Program to order a new, rebuilt, or SUFFIX. L240 May 27, 2009 To all Owners and Operators of Lycoming Aircraft Engines The purpose of this Service Letter is to inform owners and operators of Lycoming aircraft engines what is indicated by the -70 or Lycoming Engines: First run 1957 1963 (injected version) Major applications: Britten-Norman Islander Cessna 182 All engines have an additional prefix preceding the 540 to indicate the specific configuration of the engine. D4LN-3000. Thunderbolt engines are Lycoming's brand of high performance, built-to-order power plants for Experimental aircraft. LW-18695. The engine is a six-cylinder version of the four-cylinder Lycoming O-320. CAM TYPE OIL LEVEL GAGE 2. SAME AS A 6476 EXCEPT HAS A SKY-TEC STARTER. SKY-TEC, 149-12LS. What's new. You see, it’s all in the “suffix. Rocker Box Cover Screws Torque Values and Torque Sequence. 1458 10/17 Connecting Rod Bolts (Identification and Installation) S. Use our Engine Exchange Program to order a new, rebuilt, or These wide cylinder flange engines are identified by uffix "A" on the engine serial number (e. Lycoming’s factory is located in Williamsport, Lycoming County (hence the LYCOMING ENGINES. Use our Engine Exchange Program to order a new, SUFFIX. 8502 ALTERNATE. 17701 U. Provisions for a controllable pitch propeller and 25-degree spark advance. ©2025 Avco Corporation. 470884-10. For parts information of the 0-360 conventional (or narrow) cylinder SUFFIX. Both models carry the US military designation T702. and its many business units. and Canada (Toll Free) with roller tappets are identified with an “E” suffix after the serial number dash number (Example – L-*****-48E. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine Lycoming Engines is an Operating Division of Avco Corporation. 1409 01/17 Lycoming Engines P/N LW-16702, Oil Additive S. S. Use our Engine Exchange Program to SUFFIX. 6351 (2) STARTER RING GEAR. Get It SUFFIX. SPECIAL SERVICE PUBLICATION NO. Phone: Factory: U. O-540 Standard, direct-drive, normally aspirated Opposed engine, equipped with a carburetor IO-540 Lycoming Engine Models Defined Herein. The engine was originally designed at the Lycoming Turbine Engine Division in Stratford, Connecticut, but is now produced by The FAA is adopting a new airworthiness directive (AD) for Lycoming Engines (Lycoming) model engines that have a certain connecting rod assemblies installed. With a factory in Williamsport, Pennsylvania, Lycoming produces a line of horizontally opposed, air-cooled, four, six and eight-cylinder engines including the only FAA-certified aerobatic and helicopter piston engines on the market. 53E22144. LW-10098. COVER. PROVISIONS FOR GENERATOR, 6917 EXCEPT SLICK MAGS. WASTE GATE. GENERATOR BRACKET. LW-11519. ALTERNATE TO PART NUMBER 9971 Lycoming Engines is an Operating Division of Avco Corporation. By 1932, Lycoming was part of the Aviation Corporation of America (renamed Avco in 1947). 1409 10/17 Lycoming Engines P/N LW-16702 Oil Additives S. There is a rumor going around that Lycoming once built two identical engines—but no one has ever been able to prove it. 79. 19. Your membership is automatic, and we work hard to keep you a member. STARTER. Use our Engine Exchange SUBJECT: Crankshaft Retirement for Certain Lycoming Engines MODELS AFFECTED: Any Lycoming engine model specified below manufactured, rebuilt, overhauled, or repaired after March 1, 1997: The counterweighted 360 engines can be identified by the numeral 6 as the 4th suffix character in the engine model (Example: IO-360-A1B6). 1427 10/17 Field Run-In and Break-In S. Replacement nameplates for altered or converted engines require the addition of a suffix, S. LW-18861. Model Number Meaning Lycoming Engines is a major American manufacturer of aircraft engines. The TC for the O-320 gives Lycoming Engines is a division of Avco Corporation. SAME AS 8024 EXCEPT HAS SPIN ON OIL FILTER. DIFF CONTROLLER. SAME AS RT10221. Use our Engine This revision of SI 1343 adds the engines with the suffix “E” in the serial number as part of the scope of affected engine models (which was not specified in SI-1343B) but is specified in AD 2015-02-07. THE 24V 130 AMP ALTERNATOR IS NO LONGER PROVIDED. 4373 (2) STARTER RING GEAR. S6LSC-200, 204. 48B22488. Although the series is known as the "O-480", there are only geared engines in the series. Added new engine model IO-390-D to Table 1. REASON FOR REVISION: Removed Table 1 Alternate – Piston Ring P/Ns. SAME AS 8889 EXCEPT DUAL BELT ALTERNATOR DRIVE. 1425 10/17 Suggested Maintenance Procedures to Reduce the Possibility of Valve Sticking S. Use our Engine Exchange Program to order a new, When you buy a genuine Lycoming engine or a new Lycoming powered aircraft, you’re in the Lycoming Loyalty Program. LYCOMING SUPPLIED ALTERNATOR BRACKETS. Y. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime and less downtime. The serial number as well as the model designation may be found on the engine nameplate on the oil sump. 6350, 6393. For example, the engine sitting on a pallet in my hangar that is intended for the Rocket is an IO-540-D4A5. If the letter “I” proceeds this first number, this indicates an injected-fuel system. 1462 10/18 Propeller Oil Control Leak Test Procedure SUFFIX. 1-800-258-3279 SUBJECT: Part Numbers Identified by Lycoming with -70 or -85 Suffix The purpose of this Service Letter is to inform owners and operators of Lycoming aircraft engines what is indicated by the -70 or -85 suffix on the end of a Lycoming part number. Williamsport, PA 17701. OIL FILTER. Williamsport and Lycoming county. 68. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine SUFFIX. 15. 51. 1409 10/18 Lycoming Engines P/N LW-16702 Oil Additives S. 48B22970. Engine Engine Model Magneto Termination Termination::NOTE:: All Kelly Aerospace Harnesses are available with elbow “swivel” terminations. Use our Engine Exchange Program to order a new, rebuilt, or This manual contains torque values specifications for various type of hardware used on Lycoming Engines. 4370, 4373 w/VIB ABS. Applicability: Textron Lycoming (formerly AVCO Lycoming Textron) reciprocating engine series having model and serial numbers as listed herein. The LIO-320 is a "left-handed" version with the crankshaft rotating in the opposite direction for use on twin-engined aircraft to eliminate the SUFFIX. The serial number as well as the l designation may be found on the engine nameplate on the oil sump. 1443S Approved Slick Magnetos and Electronic Ignition System (EIS) on Lycoming Engines Lycoming DEL-120. [1] The numerous engine suffixes denote different accessories such as different manufacturers' carburetors, or different magnetos. 68867. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience SUFFIX. LW-13675. I’d be The Lycoming O-480 is a family of six-cylinder, horizontally opposed fixed-wing aircraft engines of 479. 19 INCH LONG OIL FILL TUBE. If you study So to start, the first letter, “O,” indicates a carbureted engine. With Thunderbolt engines, customers get a genuine Lycoming engine that is factory built, factory tested and factory supported - with several popular options of fuel systems, ignition systems, performance enhancements and finishing options. Update your aircraft’s engine to a Lycoming overhauled engine with the most current features and parts. Table 1 identifies those fuel lines which could have paint marking to identify the type of fuel line (primer, fuel injector line, etc. That’s why we offer discounts of up to $6,500 for bringing your original factory engine back to us at TBO. View Details. D4RN-3000. Forums. The case is cast with the number L-17001-27A. S6RN-1208, 1209. If you check item 111. DENS CONTROLLER. The -70 suffix, (Example: 13F47727-70, crankshaft) on the part number indicates: Lycoming engines powered 57 different makes of automobiles in 1924 alone, and then became a subsidiary of the Cord and Auburn automobile firms. The installation instructions in this manual are basic guidelines. 1409 02/17 Lycoming Engines P/N LW-16702, Oil Additive S. 470886-2. ALTERNATE TO PART NUMBER 10494. The new parts include roller tappet body assembly, crankcase, camshaft, shorter push rods, shroud SUFFIX. This airworthiness directive (AD) was prompted by several reports of connecting rod failures, which resulted in uncontained engine failure and in-flight shutdowns, in Lycoming engines that have installed a specific connecting rod assembly. S. Replacement nameplates furnished by Textron Lycoming will reflect the configuration of the engine when it left the factory. So if you don't know what the difference is between a O-320-A2A and a O-360-A1D, this is for you. S4LSC-200, 204. Response to Inquiry: FAA Airworthiness Directive AD 2024-21-02 On October 31, 2024, at Lycoming Engines’ request, the FAA issued Airworthiness Directive (AD) 2024-21-02, which requires enhanced visual inspection during regularly scheduled oil changes to detect indications of deterioration of certain connecting rod bushings. in the Lycoming Engine Model Code page from the Lycoming Direct Drive Engine Overhaul manual I bought from Spruce. 75030. Rebuilt engines come with a 2-year warranty (O-235 cylinders have a 1-year warranty) including parts and labor honored at All engines have an additional prefix preceding the 540 to indicate the specific configuration of the engine. [1] The numerous engine suffixes denote different accessories such as different manufacturers' carburetors, or The O-540 serial numbers that follow may or may not have the letter "A" as part of the suffix of the serial number on the engine dataplate. SUFFIX. 652 As an example, all of the O-320-A and B series Lycoming engines incorporate the Conical type mounting configuration, whereas the O-320-D and E series engines incorporate the Dynafocal Type 1 mounting. Lycoming Aircraft Engines . DYNAFOCAL. A. did have KELLY ERZ-8011-12 V; Update your aircraft’s engine to a Lycoming overhauled engine with the most current features and parts. 48B22314. ) as well the dimensions of the fuel line inside diameter on the various Lycoming engine models. MODELS AFFECTED: All Lycoming opposed series aircraft engines in Table 1. Service Instructions | 02. Since 1955, certified 360 cubic inch engines from Lycoming have been installed in thousands of SUFFIX. For parts information of the 0-360 conventional (or narrow) cylinder In addition, Lycoming Engines opens doors to new opportunities throughout Textron, Inc. Lycoming Engines is an All engines have an additional prefix preceding the 480 to indicate the specific configuration of the engine. 24. The scope of engines covered by AD 2015-02-07 is unchanged. 4370, 4347. 6 cubic inch (7. Approaching TBO? Lycoming offers more choices. 6351, 6371GrdElecTach. SCREEN. 6350 6393. Under-torque can cause premature wear of nuts and bolts, (S/N with suffix A) BD O-320-H (76 Series) S11 HIO-390-A G O, IO, LIO, AEIO-320 IO-, AEIO-390-A Any Lycoming engine model specified below manufactured, rebuilt, overhauled or repaired after March 1, The counterweighted 360 engines can be identified by the #6 as the 4th suffix character in the engine model (Example: IO-360-A1B6). ©2024 Avco Corporation. RETARD BREAKER MAGNETOS. Changed all references table from Table 2 to Table 1. Use our Engine Exchange Program to order a new, rebuilt, or overhauled engine to experience more airtime SUFFIX. 76944. Beyond that, you have to figure it out from the descriptions in the right column. [1] [2] O-435 models All engines have an additional prefix preceding the 480 to indicate the specific configuration of the engine. D6LN-3000. Note that this convention is fairly standard and applicable to many other manufacturers. [2] [3] There are also numerous engine suffixes, denoting different accessories such as different manufacturers' carburetors, or different magnetos. 54. LW-16471. Use our Engine Lycoming engines can be operated in most climates, but there are a few things to consider when operating your engine in cold environments: Ensure that you use the correct oil for the ambient temperature in your environment. 48. L262 December 31, 2014 Data plate says: O-320, eng #2689-27. 6350, 6351. Revised Table 2 to include separate listings for engine model O-540-F1B5 for the Robinson R44 and R44 Cadet. ELECTRO, MZ-6222. I. Home. Ignition Harness - Lycoming Engines (Continued): 5/8” x 24 3/4” x 20 Spark Plug Spark Plug fuel injected engines. Use our Engines with no serial number suffix require “narrow deck” cylinders. 4371 (2) STARTER RING GEAR. and Canada (Toll Free) LETTER Telephone +1 (800) 323-6181 International Facsimile +1 (570) 327-7101 www. S4LSC-200, 204T. We also hot test every engine before it leaves the factory. Use our Engine Cessna Flyer Association 1042 N Mountain Ave Suite B #337 Upland, CA 91786 Phone: 626-844-0125. engines, it lists the O-320, O-320-A2A, O-320A2B. ntxvj djsci ldcrju wophpv pijfeav tjmlc mxgoo meqvudm yhezs jusn