ACL Mazda B6/BP/BP-T 1.6/1.8L .50mm Undersize-Journal High Performance Main Bearing Set

ACL 5M8353H-.50 is a main bearing set for the cataloged Ford / Kia / Mazda ZMD, A5D, B1, B3 engine configurations. .50 mm journal repair-size designation. Confirm the required undersize journal diameter and assembled clearance with the engine builder.

Bearing Configuration

H identifies the ACL Race Series family. Match the complete suffix to the required clearance, shell width and locating features.

ACLs 2023 guide lists the 5M8353 main-bearing family across selected Mazda B1/B3/B5/Z5-DE and B6/BP/ZL/ZM applications. Rod-bearing selection differs: 4B8331 for the first cataloged group and 4B8351 for the B6/BP/ZL/ZM group. Confirm the exact engine and measured assembly before pairing parts.

Engine Application

The engine-family list identifies catalog applications, not universal vehicle fitment. Confirm the exact engine version, crankshaft, rods, block and bearing location. Vehicle names and photos do not replace dimensional verification.

Specifications

Quantity and Assembly Checks

Confirm the set contents, bearing positions and any separate thrust components against the complete manufacturer number. The photo is representative of the part family.

Measure shaft journals, housing bores and assembled oil clearance using the engine builders specification. Check oil-hole alignment, groove placement and crankshaft fillet clearance before final assembly. Catalog standard dimensions must not be treated as the finished dimensions for a different repair size. ACL specifies that abrasive pads or paper must not be used on the bearing surface to alter oil clearance.

Frequently Asked Questions

Is the year and model enough to choose this bearing? No. Match 5M8353H-.50 to the exact engine and measured build specification.

What size is this listing? .50 mm journal repair-size designation. Confirm the required undersize journal diameter and assembled clearance with the engine builder.

Can I substitute a different suffix? Compare the complete grade, size, locating features and assembled clearance before substituting any bearing.

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