Pairs well with
ACL race series engine main bearings are designed for high-performance race engines. ACL race bearings' unique design, metallurgy, and engineering have come together to deliver the best high-performance race-bearing your engine can depend on.
ACL race engine bearings feature Trimetal lead, tin, copper, and nickel for superior strength and seizure resistance. ACL race bearings are identified by the suffix H.
Notes:
H:?Standard oil clearance
HX:?+0.001 in extra oil clearance
HD:?Standard Oil Clearance + Dowel hole in the lower half
HXD:?+0.001 in extra oil clearance + Dowel hole in the lower half
| Bearing Series | H Series |
|---|---|
| Bearing Size | STD |
| Vehicle Make | Audi, Volkswagen |
| ? ? ? ? ? ? ? ? ? ? ? ?Brand | ACL |
| ? ? ? ? ? ? ? ? ? ? ? ?MPN | 5M1644H-STD |
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FAQ
Fitment is confirmed for the applications listed in the Specs section above. Always confirm final fitment by year, market, and supporting hardware before ordering.
Yes. A professional calibration is required to safely control boost, fueling, torque limits, and thermal management.
Fueling, charge-air cooling, intake flow, downpipes, and drivetrain upgrades may be required depending on target power and fuel type.
The system is engineered for strong response, but daily drivability depends on calibration, fuel quality, supporting parts, and installation quality.
Warranty coverage applies to manufacturing defects under normal installation and operating conditions. Track use and improper calibration may affect coverage.
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