• GM Genuine Parts 12591093 Engine Connecting Rod Bearing Set
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GM Genuine Parts 12591093 Engine Connecting Rod Bearing Set

GM Genuine Parts 12591093 Engine Connecting Rod Bearing Set

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✔ GM Genuine Parts 12591093 Engine Connecting Rod Bearing Set — Genuine OEM Part
✔ Fitment: Select Buick, Chevrolet, GMC, Pontiac, Saturn, and Oldsmobile models (2000–2017) with 2.0L, 2.2L, and 2.4L L4 engines — See Fitment Table for full details
✔ Direct replacement for factory connecting rod bearings — no modifications required
✔ Manufactured to GM’s original specifications — Stock size, steel construction
✔ Genuine OEM quality — designed, engineered, and tested to rigorous standards
✔ Replaces 21018825


GM Genuine Parts 12591093 Engine Connecting Rod Bearing Set — for Select GM Models

Engine knocking, reduced oil pressure, or metal debris in the oil pan — these are common signs that your connecting rod bearings are worn and need replacement. The connecting rod bearings support the rotating motion of the crankshaft within the connecting rod, transmitting the cycling loads from the pistons. Worn bearings can cause severe engine damage if not addressed. Replacing them with this genuine GM part restores proper clearance and protects your engine.

This is a factory-original GM engine connecting rod bearing set (OE part number 12591093). It is a standard-size set that includes upper and lower bearings for four rods (8 pieces total). The bearings are made from high-quality steel and are designed, engineered, and tested to rigorous standards, backed by General Motors. This is the same part sold at GM dealerships.

 

When to Replace

• Engine knocking or rattling noise
• Reduced oil pressure
• Metal debris visible in the oil pan
• Engine vibration or rough running
• Low oil pressure warning light

Product Details & Highlights

• ✔ Genuine GM OEM — not an aftermarket or Chinese replica
• ✔ Set of 4 — includes upper and lower bearings for four rods (8 pieces total)
• ✔ Steel construction — durable and reliable
• ✔ Stock size — direct replacement for factory bearings
• ✔ Manufactured to GM’s strict quality standards
• ✔ Backed by GM’s manufacturer warranty (valid through any authorized dealer)

Package Contents

• 1 × GM Genuine Parts 12591093 engine connecting rod bearing set (8 pieces — upper and lower for four rods)

 

FAQ

FAQ

Is this a genuine GM part or a copy?
This is 100% genuine GM OEM — in original factory packaging with the GM part number printed on the label. It is not an aftermarket brand or a replica.

Does this fit my 2012 Chevrolet Equinox?
Yes — the 2012 Equinox with the 2.4L L4 engine uses this bearing set. We recommend verifying with your VIN.

Does this fit my 2008 Chevrolet Malibu?
Yes — the 2008 Malibu with the 2.2L or 2.4L L4 engine is listed as compatible. Please verify with your VIN.

How many bearings are in this set?
This set includes upper and lower bearings for four rods (8 pieces total).

Is this a standard size bearing?
Yes — this is a stock-size bearing set. Engine crankshaft undersize is stock (0.00 mm).

Can I install these bearings myself?
Installing connecting rod bearings requires significant engine disassembly and precision measurement. We recommend this work be performed by a qualified engine machinist or technician.

Does this replace 21018825?
Yes — part number 12591093 supersedes and replaces the older 21018825 reference.

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