Description
Product Overview
The GM Genuine Parts Pinion Gear Inner Bearing S1381 is a premium tapered roller bearing designed to match the original equipment specifications of GM vehicles. Constructed from a robust steel alloy, it offers exceptional load‑carrying capacity and resistance to wear. The machined exterior ensures a perfect fit within the pinion gear assembly, while the grease‑compatible design promotes optimal lubrication for smooth operation. Dimensions measure 4 x 4 x 2 inches and the unit weighs 2 pounds, making it easy to handle during installation.
![[Product front view showing all components]](https://www.bigvibe.store/wp-content/uploads/2026/06/cccfa9e691a2441aa7b94779a91dff9a.jpg)
Usage
This bearing is intended for replacement of the pinion gear inner bearing in a variety of GM models. It is suitable for both professional mechanics and DIY enthusiasts performing drivetrain repairs or routine maintenance. Install the bearing in the pinion gear housing to restore proper gear engagement, reduce noise, and prevent premature wear. Ideal for use in passenger cars, light trucks, and SUVs that require the S1381 specification.
Why Choose Us
Choosing GM Genuine Parts means you receive a component that meets the exacting standards of the original equipment manufacturer. Each bearing is manufactured to OE specifications, guaranteeing fit, form, and function identical to the factory part. Our rigorous quality control process ensures consistent performance, while the steel alloy construction provides superior durability compared to generic alternatives. Backed by ACDelco’s reputation, this bearing delivers the reliability drivers expect from GM‑approved parts.
Key Features
- High‑strength steel alloy delivers long service life and resistance to wear.
- Exact OE fit eliminates guesswork during installation.
- Designed for grease lubrication, ensuring smooth operation under load.
- Compact dimensions make handling and fitting straightforward.
- Supported by ACDelco customer service and warranty for peace of mind.
FAQ
Is this bearing a direct replacement for the original GM part?
Yes, the S1381 bearing matches the OEM specification and fits the same mounting points as the original GM component.
What type of lubricant should be used?
The bearing is compatible with standard automotive grease; apply a high‑quality grease recommended for tapered roller bearings.
Can I install this bearing myself?
With basic hand tools and a service manual, a DIY enthusiast can replace the bearing. However, professional installation is recommended for optimal results.
Does this bearing come with a warranty?
Yes, it includes ACDelco’s standard warranty covering manufacturing defects.
What vehicles are compatible with this bearing?
It is designed for GM models that specify the S1381 pinion gear inner bearing; consult your vehicle’s service guide for exact fitment.
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