Size Chart
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ACL 4B2960HX-STD is a connecting-rod bearing set for the cataloged Nissan SR18DE, SR18Di, SR20DE, SR20DET engine configurations. STD manufacturer size designation; verify the exact engine and assembled clearance.
HX specifies 0.001 inch (0.025 mm) additional oil clearance relative to the corresponding H-STD set on the specified standard-size shaft. It is separate from any repair-size or housing-oversize designation.
For SR20DE/DET applications, this family is cataloged for non-GTiR configurations. The SR20DET GTiR uses a separately cataloged 4B2976 rod-bearing family.
| Manufacturer / Engine | Nissan — SR18DE |
|---|---|
| Manufacturer / Engine | Nissan — SR18Di |
| Manufacturer / Engine | Nissan — SR20DE |
| Manufacturer / Engine | Nissan — SR20DET |
| Manufacturer / Engine | Nissan — SR20Di |
| Manufacturer / Engine | Nissan — SR20VE |
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.
| Brand | ACL |
|---|---|
| Manufacturer Part Number | 4B2960HX-STD |
| Component | Connecting-Rod Bearing Set |
| Size Selection | STD manufacturer size designation; verify the exact engine and assembled clearance. |
| Catalog Rod Housing Bore (STD journal) | 51.000–51.013 mm |
| Catalog Rod Journal Diameter (STD) | 47.956–47.974 mm |
| Catalog Family | ACL Race Series |
| Half Type | Identical halves |
| Catalog Size Options | STD |
Confirm the rod-bearing set contents and shell positions 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 builder’s 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.
Is the year and model enough to choose this bearing? No. Match 4B2960HX-STD to the exact engine and measured build specification.
What size is this listing? STD manufacturer size designation; verify the exact engine and assembled clearance.
Can I substitute a different suffix? Compare the complete grade, size, locating features and assembled clearance before substituting any bearing.
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