ACL
ACL Race Series Main Bearings Mazda 4 B6/BP/BP-T Race Series Size: 0.25
ACL Race Series Main Bearings Mazda 4 B6/BP/BP-T Race Series Size: 0.25
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- Free fitment check before you order
Listed for: Mazda 4Fitment notes & questions
ACL Race Series Main Bearings Mazda 4 B6/BP/BP-T Race Series Size: 0.25
ACL Performance Race Bearings are manufactured with a tri-layer metal with a hardened steel backing in order to withstand high RPM conditions, high stress loads, and high temperatures. Each ACL race bearing design features the following:
- Large chamfer to accomodate larger crankshaft fillets
- 3/4 groove to provide optimum oil supply to rods and to maximize load carrying capacity
- Incresed crush and tighter wall tolerance for better seating
- Improved overlay and reduced thickness for increased fatigue strength
- Hardened steel backing to maintain crush under high loads and temperatures
- Size: 0.25
Note: Pictures may not be actual product.

ACL parts for your Mazda 4: what to know
This ACL part is listed for the Mazda 4. Below are fitment notes, what usually goes with it, and answers to common questions.
Fitment notes
- Listed for: Mazda 4.
- Specs, lead time and warranty come from ACL and can change. The details above this guide are the latest we have.
Not sure it fits? Send us your year, make, model, trim and drivetrain and we'll check with the supplier before you order.
Ask about fitmentParts that usually go with it
- Gaskets, seals and hardware. Many jobs reuse parts that should be replaced, such as one-time bolts, gaskets and O-rings. Check what the old part used.
- Fluids. Cooling, brake, fuel and drivetrain jobs often mean topping up or bleeding fluid. Have the right type for your car on hand.
More for your car: Main Bearings