ls rear main seal
Skip it42/100a small market ($58K/yr) — ls rear main seal doesn't clear our bar today.
Market/yr
$58K
Growth (1y)
+169.1%
Products
18
Brands
17
was 14 a year ago
Sellers
66
Price range
$13.71–$69.20
Returns
2.9%
Rating
4.6★
Skip it
Scored 42/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 15 weeks — +169.1% year over year.Competition
- Dorman19%
- Fel-Pro15%
- AUTOBABA13%
- Sumyola13%
- A-Premium7%
- RADHLBNIU6%
- Other (11 brands)28%
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them. 17 brands and 66 sellers compete here.
Brands
17 rising
was 14 a year ago
Sellers
66
Top 5 brand share
67%
Product shelf
All 18 tracked products in this niche.
Dorman 635-518 Engine Rear Main Seal Cover Compatible with Select Models
Dorman
$49.634.6★1,169 reviews
FEL-PRO BS 40640 Engine Crankshaft Seal Kit for Chevrolet Silverado 1500
Fel-Pro
$21.594.8★2,112 reviews
Engine Rear Main Seal Cover Kit with Gasket & Bolt Compatible with Cadillac Escalade GMC Yukon Sierra Chevy Suburban Silverado Tahoe Express 4.8 5.3 6.0 6.2L Replace# 635-518 12633579 12639250
AUTOBABA
$36.044.6★123 reviews
Sumyola Rear Main Seal Gasket Cover & Bolts GM Chevy LS Engine 635-518 12633579 12639250
Sumyola
$28.024.3★38 reviews
![A-Premium Engine Rear Main Seal Cover Kit [OHV 8Cyl 4.8 5.3 5.7 6.0 6.2 7.0L] Compatible with Chevy GMC Cadillac Hummer Isuzu Pontiac Saab & Buick fits Express Silverado Sierra & More Models](https://m.media-amazon.com/images/I/41gRkRB2CrL.jpg)
A-Premium Engine Rear Main Seal Cover Kit [OHV 8Cyl 4.8 5.3 5.7 6.0 6.2 7.0L] Compatible with Chevy GMC Cadillac Hummer Isuzu Pontiac Saab & Buick fits Express Silverado Sierra & More Models
A-Premium
$36.374.1★349 reviews
RADHLBNIU Rear Main Seal Kit Compatible with Chevy Tahoe Suburban Silverado Express Avalanche Cadillac Escalade GMC Yukon Sierra Savana 4.8L 5.3L 6.0L 6.2L Replaces# 635-518 12633579 12639250
RADHLBNIU
$36.394.6★92 reviews
LS Rear Main Seal Cover & Gasket Bolts For 1997-2013 LS Based 4.8 5.3 5.7 6.0 6.2L V8 Engines LS1 LQ4 LQ9 LM7 LS2 LS3 LS7 LC9 LS6 Replace# 12639250 12633579 635-518
Armker
$38.234.4★45 reviews
BS40640 Rear Main Seal Kit for Chevy Silverado 1500 1997-2016 GM LS Engines 4.8L 5.3L 5.7L 6.0L 6.2L - Replacement Crankshaft Seal & Metal Gasket Set Fits Tahoe Suburban
JBROPARTS
$13.744.4★33 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“The bolts look like very good quality”
“Fit great”
“No more leaking rear main seal”
“It does was supposed to do”
“Easy install”
“the price is fair”
“Works great”
“GM V8 engines can last a very long time with proper maintenance”
“Seals the rear main as it should”
“it plays a big role in keeping a 5.3L Chevy motor clean and healthy”
What buyers complain about
“Leaks”
“Lasted 6 months and blew out”
“Junk”
“I havent installed it yet”
“engineering does not fit the Eco tech 5.3 L”
“Received unusable part”
“only complaint was the supplied bolts are larger than factory”
“This is actually thicker than the factory cover”
“I replaced it before setting the engine in the new frame to save myself the headache of having to replace it later”
“I lost oil pressure late January 2026”
Top return reasons
- Size-Overall22%
- Leak-Proof14%
- Defective Material/Parts12%
- Value For Money9%
- Compatibility-Overall8%
- Product Condition6%
- Quality-Overall6%
- Advertised Vs Actual Product5%
- Functionality-Overall3%
- Assembly/Installation3%