Key Features & Benefits – ACL Race Suzuki M15A/M16A/M18A main bearing set X-version (HX)
The ACL Race Suzuki M15A/M16A/M18A main bearing set X-version (HX) is a main bearing set for Suzuki M15A/M16A/M18A engines. The HX marking adds 0.025 mm extra oil clearance versus the H-STD set on a standard-size shaft, which equals 0.001" additional clearance.
This variant is a practical choice when your build plan calls for increased oil clearance while still keeping the final fit tied to real measurements. Consistent journal measurement, clean housing seats, and repeatable clearance checks are the key steps that make the HX option work as intended.
When is this useful?
During a rebuild, the HX option allows you to target more oil clearance on a standard-size crankshaft. Used alongside measured journal dimensions and a defined clearance target, it supports stable lubrication conditions for the rotating assembly.
Technical specs
- Brand: ACL
- Type: Main Bearing
- Engine compatibility: Suzuki M15A/M16A/M18A
- Variant / size: X-version (HX)
- HX meaning: +0.025 mm (+0.001") extra oil clearance on a standard-size shaft versus the H-STD set
- Country of origin: Australia
- Sizes within the family: Standard, X-version, 0.025 mm, 0.25 mm
- Identifier: 5M8443HX
Selection & installation tips
- Measure first: measure crank main journals in multiple positions and inspect block saddles for clean, undamaged seating.
- Read HX correctly: HX targets extra clearance on a standard-size shaft; the 0.025 mm and 0.25 mm options are different sizing steps, not HX.
- Verify clearance: check oil clearance at each main position during assembly and keep bearing halves paired within the set.
- Align oil feeds: ensure oil holes and galleries are clean and that the installed bearing position does not block the oil path.
- Match markings: confirm markings on the bearings and packaging, especially the HX identification.
Before installation, compare your measured journal sizes, housing condition, and clearance target to the HX clearance direction, then confirm markings and clearances during assembly so the set matches your engine’s real dimensions.
