ACL 5M8309HO/S2-STD is a high-performance main bearing set for compatible Subaru EJ20, EJ22, and EJ25 engine builds with an oversize housing specification. Engine family alone does not confirm compatibility. Match the exact manufacturer part number and all published specifications before ordering.
Key Features
Fitment
Match the exact ACL part number, thrust-position configuration, housing bore, crankshaft dimensions, and required assembled oil clearance. Do not select this bearing set by a vehicle model or engine-family name alone.
Specifications
| Brand | ACL |
|---|---|
| Manufacturer Part Number | 5M8309HO/S2-STD |
| Product Type | Main Bearings |
| Fitment Type | Fitment Verification Required |
| Condition | New |
| GTIN | 9315726454169 |
What's Included
One ACL main bearing set identified by manufacturer part number 5M8309HO/S2-STD.
About ACL
ACL manufactures performance and replacement components identified by exact part number, specifications, and published application data.
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Frequently Asked Questions
How do I confirm 5M8309HO/S2-STD is correct?
Match the exact ACL part number, thrust-position configuration, housing bore, crankshaft dimensions, and required assembled oil clearance. Do not select this bearing set by a vehicle model or engine-family name alone.
Are similar-looking parts interchangeable?
No. Match manufacturer part number 5M8309HO/S2-STD, dimensions, configuration, included components, and every current manufacturer note.
What is included with this listing?
One ACL main bearing set identified by manufacturer part number 5M8309HO/S2-STD.
Installation
Follow the current ACL instructions for part number 5M8309HO/S2-STD. Verify fit, clearances, wiring or mechanical specifications, fastener torque, and safe operation before use.
Shop ACL main bearings, rod bearings, thrust components, and performance engine-bearing sets by exact manufacturer part number, engine family, size, clearance, and thrust configuration.ACL Product Families Main bearing sets Connecting-rod bearing sets Thrust washers and thrust-bearing configurations Standard, undersize, oversize, and extra-clearance options Choosing the Correct ACL ProductConfirm the exact ACL part number, engine version, crankshaft journal dimensions, housing bore, bearing size, clearance series, and thrust position. Vehicle or engine-family names alone do not replace engine-builder measurement.About ACLACL manufactures replacement and performance engine bearings for carefully measured street, competition, and motorsport engine builds.Related ACL Products ACL Chevrolet V8 6.2L LT1/LT4/L86 (Gen V) Race Series .020 Rod Bearing Set ACL Nissan VR38DETT 3799cc V6 DOHC 4V Twin Turbo Standard Size High Performance Main Bearing Set ACL Subaru EJ20 EJ22 EJ25 0.002 Inch Over...
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