---
product_id: 13612796
title: "National RA-321-C Axle Differential Bearing and Seal Kit for Chevrolet Silverado 1500"
brand: "national"
price: "498 zł"
currency: PLN
in_stock: true
url: https://www.desertcart.pl/products/13612796-national-ra-321-c-axle-differential-bearing-and-seal-kit
store_origin: PL
region: Poland
---

# Rigorous Testing Durable Steel Complete Repair Kit National RA-321-C Axle Differential Bearing and Seal Kit for Chevrolet Silverado 1500

**Brand:** national
**Price:** 498 zł
**Availability:** ✅ In Stock

## Summary

> 🔩 Elevate Your Repair Game with Confidence!

## Quick Answers

- **What is this?** National RA-321-C Axle Differential Bearing and Seal Kit for Chevrolet Silverado 1500 by national
- **How much does it cost?** 498 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/13612796-national-ra-321-c-axle-differential-bearing-and-seal-kit)

## Best For

- national enthusiasts

## Why This Product

- Trusted national brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **OEM Specifications:** Designed to match original equipment for optimal performance.
- • **Unmatched Durability:** Engineered with premium materials for long-lasting performance.
- • **Quality You Can Trust:** Thoroughly tested by National engineers for reliability.
- • **Comprehensive Coverage:** Perfect fit for both domestic and import applications.
- • **Complete Repair Solution:** Everything you need for a seamless repair.

## Overview

The National Bearings RA-321-C Axle Differential Bearing and Seal Kit is a comprehensive solution designed for both domestic and import applications. Weighing just 1.6 ounces and measuring 11.75 x 11 x 2.5 inches, this kit includes everything needed for a complete repair. Crafted with premium materials and subjected to rigorous testing, it ensures unmatched durability and reliability, making it the go-to choice for professionals seeking quality and performance.

## Description

National RA-321-C Axle Differential Bearing and Seal Kit for Chevrolet Silverado 1500

## Features

- COMPLETE SOLUTION -- Includes everything needed to complete the repair
- STRONG AND DURABLE -- Controlled heat treatment process for strength and durability
- COMPREHENSIVE COVERAGE -- Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING -- Comprehensive testing throughout design and development processes by National engineers for quality you can count on
- Premium materials and precise manufacturing ensures consistent reliability
- Premium steel grades for durability and performance
- Premium bearing design matches OEM specifications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | National Bearings |
| Brand | National |
| Item Weight | 1.6 ounces |
| Product Dimensions | 11.75 x 11 x 2.5 inches |
| Item model number | RA321C |
| Manufacturer Part Number | RA321C |
| OEM Part Number | RA-321-C |

## Images

![National RA-321-C Axle Differential Bearing and Seal Kit for Chevrolet Silverado 1500 - Image 1](https://m.media-amazon.com/images/I/71Ux+QJtEeL.jpg)

## Questions & Answers

**Q: Is this for a 10 bolt differential?**
A: Thank you for the question.  Yes. the National RA321C is for the 8.625 ring gear axle with 10 differential cover bolts.

**Q: Will this fit a gm 8.6 rear end? the truck in question is a 2003 silverado, z71 with g80 locking diff and 3.73 gear. thanks**
A: All of the bearings fit my 05 z71 avalanche with the g80 except the inner pinion it was smaller diameter than the original which caused the pinion to sit too far into the housing so I ended up reusing the original inner pinion bearing when I put mine back together.

**Q: does this have the outer bearing seals?**
A: No

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**Shop now:** [https://www.desertcart.pl/products/13612796-national-ra-321-c-axle-differential-bearing-and-seal-kit](https://www.desertcart.pl/products/13612796-national-ra-321-c-axle-differential-bearing-and-seal-kit)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-01-28*