---
product_id: 280816337
title: "BS 40640 Rear Main Seal Set"
brand: "fel-pro"
price: "R780"
currency: ZAR
in_stock: true
reviews_count: 5
category: "Fel Pro"
url: https://www.desertcart.co.za/products/280816337-bs-40640-rear-main-seal-set
store_origin: ZA
region: South Africa
---

# Heat-cycled rubber resists wear & tear Precision fit for flawless installation OEM-grade durability & leak protection BS 40640 Rear Main Seal Set

**Brand:** fel-pro
**Price:** R780
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with Fel-Pro – where precision meets performance!

## Quick Answers

- **What is this?** BS 40640 Rear Main Seal Set by fel-pro
- **How much does it cost?** R780 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/280816337-bs-40640-rear-main-seal-set)

## Best For

- fel-pro enthusiasts

## Why This Product

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

## Key Features

- • **Trusted OEM Quality:** Meets or exceeds original equipment specs for reliable, long-lasting performance.
- • **Pro-Grade Durability:** Backed by 50+ years of Fel-Pro excellence and professional trust.
- • **Leak-Proof Confidence:** Durable rubber material withstands heat cycles to prevent costly oil leaks.
- • **Easy Installation Ready:** Compatible with alignment tools and designed for hassle-free setup.
- • **Perfect Fit, Every Time:** Application-specific design ensures seamless integration with your engine.

## Overview

The FEL-PRO BS 40640 Rear Main Seal Set delivers a perfect, OEM-spec fit with durable, heat-resistant materials engineered to prevent oil leaks. Trusted by professionals for over 50 years, this set ensures reliable sealing performance and easy installation, making it the go-to choice for millennial managers who demand quality and peace of mind under the hood.

## Description

Felpro Gaskets Offer 100% Vehicle Sealing With Applicationspecific Materials To Give You Sealing Solutions With The Performance And Durability Professionals Trust.

Review: Has been a quality product for many many years (50 years in my case), so you can not go wrong with Fel-Pro.
Review: I chose this over a lot of other cheap, generic aftermarket rear main seals and gaskets. It's also mainly the rear main seal that's the most important, aside from the rear main cover gasket. I've seen a lot of the really cheap aftermarket rear main seals leak, so I wasn't going to take a chance; especially not after dropping my whole transmission and really not wanting to have to do that again in the next 10-20k miles (or maybe even less!). I did have a separate OEM GM LS rear main seal that I used, but this Fel-pro one is just as good, in my personal opinion. The cheap ones are sometimes a bit smaller in size, and the rubber material isn't as durable, which causes leaks as it gets heat-cycled. I also bought a billet aluminum rear main cover alignment tool, to center the rear main cover for installation (along with the new cover gasket), before using it to install the new rear main seal cover. I guess it's more exact to install using the alignment tool, but I've done it in the past with the rear main seal installed BEFORE re-installing the rear main cover, and I was still fine. Lastly, you'll also want to make sure to clean all the surfaces to the mating surfaces, including the oil pan gasket portion that the rear main cover sits on. I personally used Permatex ultra black RTV gasket maker, which is oil safe. The ultra gray version works as well, but I'm sure any high temp and oil-resistant RTV gasket maker, should do the trick just fine.

## Features

- Rear main bearing oil seal installation set
- Application-specific design ensures a perfect fit
- Meets or exceeds all original equipment specifications
- Validated for fit, form and function
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000C2GA1Y |
| Best Sellers Rank | #31,673 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Main Seals |
| Brand | Fel-Pro |
| Customer Reviews | 4.8 4.8 out of 5 stars (1,984) |
| Date First Available | 7 August 2012 |
| Item Weight | 22.7 g |
| Item model number | BS40640 |
| Manufacturer | Federal Mogul |
| Manufacturer Part Number | BS40640 |
| Model | Fel-Pro |
| OEM Part Number | BS40640 |
| Product Dimensions | 30.48 x 27.94 x 2.79 cm; 22.68 g |

## Product Details

- **Brand:** Fel-Pro
- **Colour:** Multicoloured
- **Material:** Rubber Aluminium
- **Shape:** Round
- **UPC:** 614046626461

## Images

![BS 40640 Rear Main Seal Set - Image 1](https://m.media-amazon.com/images/I/61o-Bt4eatL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***N on 24 January 2026*

Has been a quality product for many many years (50 years in my case), so you can not go wrong with Fel-Pro.

### ⭐⭐⭐⭐⭐ Review
*by B***. on 15 September 2025*

I chose this over a lot of other cheap, generic aftermarket rear main seals and gaskets. It's also mainly the rear main seal that's the most important, aside from the rear main cover gasket. I've seen a lot of the really cheap aftermarket rear main seals leak, so I wasn't going to take a chance; especially not after dropping my whole transmission and really not wanting to have to do that again in the next 10-20k miles (or maybe even less!). I did have a separate OEM GM LS rear main seal that I used, but this Fel-pro one is just as good, in my personal opinion. The cheap ones are sometimes a bit smaller in size, and the rubber material isn't as durable, which causes leaks as it gets heat-cycled. I also bought a billet aluminum rear main cover alignment tool, to center the rear main cover for installation (along with the new cover gasket), before using it to install the new rear main seal cover. I guess it's more exact to install using the alignment tool, but I've done it in the past with the rear main seal installed BEFORE re-installing the rear main cover, and I was still fine. Lastly, you'll also want to make sure to clean all the surfaces to the mating surfaces, including the oil pan gasket portion that the rear main cover sits on. I personally used Permatex ultra black RTV gasket maker, which is oil safe. The ultra gray version works as well, but I'm sure any high temp and oil-resistant RTV gasket maker, should do the trick just fine.

### ⭐⭐⭐⭐⭐ Review
*by A***O on 29 June 2023*

Excelente producto

## Frequently Bought Together

- FEL-PRO BS 40640 Engine Crankshaft Seal Kit for Chevrolet Silverado 1500
- FEL-PRO OS 30693 R Engine Oil Pan Gasket Set for Chevrolet Silverado 1500
- FEL-PRO TCS 45993 Engine Timing Cover Gasket Set for Chevrolet Silverado 1500

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.za/products/280816337-bs-40640-rear-main-seal-set](https://www.desertcart.co.za/products/280816337-bs-40640-rear-main-seal-set)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-03*