Best Fel Pro Main Seals in 2026

Daisy
Last Updated: Feb 9, 2026

At a Glance: Our Top Picks for Fel Pro Main Seals

FEL-PRO BS 40666 Rear Main Seal Set
#TOP1
Fel-Pro Bs 40666 Rear Main Seal Set
9.6
PM SCORE
FEL-PRO BS 40685 Rear Main Seal Set
#TOP2
Fel-Pro Bs 40685 Rear Main Seal Set
8.1
PM SCORE
REPLACEMENTKITS.COM Brand Front B & S Oil Seal Replaces 795387
#TOP3
Replacementkits.com Brand Front B & S Oil Seal
7.2
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Fel Pro Main Seals of 2026

Market Overview
Fel Pro Main Seals Reviewed
  • Reviews Analyzed: 364 Items
  • PM Avg. Rating: 6.2 / 10
5 Products Evaluated
  • Highest Price: $67.99
  • Lowest Price: $6.99
  • Avg. Price: $21.79

Fel-Pro Bs 40666 Rear Main Seal Set

FEL-PRO
BS40666
5.00 X 5.00 X 1.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Fel-Pro Bs 40685 Rear Main Seal Set

FEL-PRO
BS40685
5.00 X 5.00 X 1.00 Inches
0.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

Replacementkits.com Brand Front B & S Oil Seal Replaces 795387

REPLACEMENTKITS.COM
7.00 X 5.00 X 0.25 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
REPLACEMENTKITS 9.82

Features

Replaces 795387 and older #’s 791892, 690947, 499145

Highest Quality Aftermarket Parts Available

100% Satisfaction Guaranteed

Fel-Pro Bs 40003 Rear Main Seal Set

FEL-PRO
BS40003
8.00 X 3.50 X 0.50 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Rear main bearing oil seal installation set

Application specific design to ensure a perfect fit

Meets or exceeds all original equipment specifications

Engineered and manufactured specifically for repair applications

Unsurpassed quality you can trust

For Duramax Diesel 6.6L Main Crankshaft Seal Driver Kit Front & Rear Crank Seal Installer Kit For 01-16 Gm 6.6 6.6L, Lb7 Lly Lbz Lmm Lml

USSKYBOY
01-16
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Tim international USA 7.85

Features

【Application】Fit for 2001-2016 GM Duramax Diesel Engine. (Engine Types: LB7 LLY LBZ LMM LML)

【Function】The main crank seal driver is specially designed to install the front and rear main seals of the engine. Using this will help you install the seals safely and correctly without damaging the seals.

【Premium Material】Made of high-quality aluminum alloy, high-strength, durable, no rust, not easy to deform, can guarantee years of trouble-free use.

【Package Includes】 1x Front Main Crank Seal Driver+1x Rear Main Crank Seal Driver.

【Satisfaction Guarantee】 Provides a 100% satisfied after-sales service. If you are not satisfied with it, simply return it within 30 days for a full refund. Premium Support 1 year Warranty.

Top 10 main seals Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Fel-Pro 3
Replacementkits.com 1
Usskyboy 1

Top 10 main seals Brands Pie Chart


We've carried out a comprehensive analysis of 364 reviews on main seals, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select main seals priced around $21.79, with top brands including and

Our team of expert editors reviewed these high-quality items and handpicked the top 5 main seals for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .

We are dedicated to assisting our users in finding the right seals Products based on their needs, saving them considerable time when choosing which main seals to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.