Ls Rear Main Seal
FailShoppers spend an estimated $58K a year here, so Ls Rear Main Seal is a Fail.
- Flapen Score
- 47 / 100Ranks 4,157 of 7,287 Automotive niches · −2 vs the category median of 4947
- Market size
- $58K/yr22K searches / yr
- 90-day growth
- -13.4%search demand this quarter
- Competition
- 63%top-5 click share · 17 brands · 66 sellers
Flapen Score
Ls Rear Main Seal against its category
The dotted line is the Automotive average. Past it, Ls Rear Main Seal is stronger. Inside it, weaker.
Market
The Ls Rear Main Seal market on Amazon at a glance
Shoppers on Amazon United States searched for Ls Rear Main Seal 22K times last year and spent an estimated $58K. The top 5 brands take 67% of clicks. Flapen scores it 47 out of 100, a Fail.
01 · Demand
An estimated 8.9% of those searches ended in a purchase.
Shoppers searched for this 22K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 8.9% of those searches ended in a purchase. Searches in the last 90 days moved -13.4% against the 90 days before. Searches, conversion and average price together put the market at an estimated $58K a year.
- Searches, last 12 months
- 22K
- Growth, 90 days vs prior 90
- -13.4%
- Conversion, latest week
- 8.9%
- Market size, estimated
- $58Ka year
- Top search term
- ls rear main seal9K searches a year
02 · Price
A sale here is worth $29.66.
Listings sell for $29.66 on average, from $13.71 to $69.20. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 0 to 100 of them. At $29.66 that is $0 to $3K a year per listing.
- Average price
- $29.66inside the $15 to $100 sweet spot
- Price range
- $13.71–$69.20
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$3K
- Returns
- 2.9%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
94% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.9% of listings are out of stock. The average listing ranks #704 within Bearings & Seals. It carries 263 reviews at 4.57 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 94%
- Prime listings
- 100%
- Out of stock, average day
- 4.9%
- Average rank
- #704in Bearings & Seals
- Average rating
- 4.57 starsAmazon United States average 4.42 stars
- Average reviews
- 263per listing
- Listings tracked
- 18
04 · Newcomers
2 of last year's 5 launches cleared the first-year sales bar.
5 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 53 months on average, so the names here are settling in.
- Launched, last 12 months
- 5
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 53 months
Products
Top Ls Rear Main Seal products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Dorman 635-518 Engine Rear Main Seal Cover Compatible with Select Models
- Price
- $49.63
- Rating
- 4.6/5
- Reviews
- 1,169
- Age
- 13y ago

FEL-PRO BS 40640 Engine Crankshaft Seal Kit for Chevrolet Silverado 1500
- Price
- $21.59
- Rating
- 4.8/5
- Reviews
- 2,112
- Age
- 19y ago

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
- Price
- $36.04
- Rating
- 4.6/5
- Reviews
- 123
- Age
- 2y ago

Sumyola Rear Main Seal Gasket Cover & Bolts GM Chevy LS Engine 635-518 12633579 12639250
- Price
- $28.02
- Rating
- 4.3/5
- Reviews
- 38
- Age
- 2y ago
![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
- Price
- $36.37
- Rating
- 4.1/5
- Reviews
- 349
- Age
- 6y ago
Trending
estimated 90-day click momentum
VANLISON Rear Main Seal Cover Kit - Compatible with Chevy Silverado Tahoe Suburban Avalanche GMC Sierra Yukon Savana ESC 4.8L 5.3L 6.0L 6.2L - Replaces 635-518 12633579 12639250
- Price
- $31.68
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 5mo ago

KAFKOF Rear Main Seal Gasket Kit Compatible with 4.8L 5.3L 5.7L 6.0L 6.2L Chevy Silverado Tahoe Suburban GMC Sierra Yukon Savana Cadillac Escalade. Engine Crankshaft Seal Kit Replace BS40640 12639249
- Price
- $14.38
- Rating
- 4.9/5
- Reviews
- 13
- Age
- 6mo ago

Michigan Motorsports LS Rear Main Crank Cover Seal | Replaces GM 89060436 | Fits 4.8L 5.3L 5.7L 6.0L 6.2L LS Engines LS1 LS2 LS3 LQ9 LQ4 | Quality Replacement Rear Main Seal for GM LS Applications
- Price
- $24.61
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 7y ago

Sumyola Engine Rear Main Seal Cover Kit with Gasket & Bolt for Cadillac Escalade for GMC Yukon Sierra for Chevy Suburban Silverado Tahoe Express 4.8 5.3 6.0 6.2L Replace# 635-518 12633579 12639250
- Price
- $26.07
- Rating
- 4.9/5
- Reviews
- 15
- Age
- 10mo ago

LOBIUTIYA 635-518 Rear Main Seal Kit with Oil Pan Gasket 12612350 Oil Pan Gaskets for Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra Yukon 4.8L 5.3L 6.0L 6.2L 12637683
- Price
- $69.20
- Rating
- 4.6/5
- Reviews
- 16
- Age
- 9mo ago
Newest
by launch date
VANLISON Rear Main Seal Cover Kit - Compatible with Chevy Silverado Tahoe Suburban Avalanche GMC Sierra Yukon Savana ESC 4.8L 5.3L 6.0L 6.2L - Replaces 635-518 12633579 12639250
- Price
- $31.68
- Rating
- 5.0/5
- Reviews
- 1
- Age
- 5mo ago

KAFKOF Rear Main Seal Gasket Kit Compatible with 4.8L 5.3L 5.7L 6.0L 6.2L Chevy Silverado Tahoe Suburban GMC Sierra Yukon Savana Cadillac Escalade. Engine Crankshaft Seal Kit Replace BS40640 12639249
- Price
- $14.38
- Rating
- 4.9/5
- Reviews
- 13
- Age
- 6mo ago

vocsvok BS40640 Rear Main Seal Kit for Hummer Chevy Silverado GMC Buick Cadillac - Fits GM 4.8L 5.3L 5.7L 6.0L LS Engines Replacement Crankshaft Seal Metal Gasket Set
- Price
- $13.71
- Rating
- 4.3/5
- Reviews
- 6
- Age
- 7mo ago

LOBIUTIYA 635-518 Rear Main Seal Kit with Oil Pan Gasket 12612350 Oil Pan Gaskets for Chevy Silverado Suburban Tahoe Trailblazer GMC Sierra Yukon 4.8L 5.3L 6.0L 6.2L 12637683
- Price
- $69.20
- Rating
- 4.6/5
- Reviews
- 16
- Age
- 9mo ago

Sumyola Engine Rear Main Seal Cover Kit with Gasket & Bolt for Cadillac Escalade for GMC Yukon Sierra for Chevy Suburban Silverado Tahoe Express 4.8 5.3 6.0 6.2L Replace# 635-518 12633579 12639250
- Price
- $26.07
- Rating
- 4.9/5
- Reviews
- 15
- Age
- 10mo ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 63% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 rising
Sellers
66
Est. top-5 brand share
67%
Top 20: 100%
Est. top-5 click share
63%
Top 20: 100%
Open market
28%
- Dorman19%
- Fel-Pro15%
- AUTOBABA13%
- Sumyola13%
- A-Premium7%
- RADHLBNIU6%
Demand
Ls Rear Main Seal search demand
Weekly searches over the year. Pick a range.
Search terms
Top Ls Rear Main Seal search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- ls rear main seal9K/yr
- rear main seal for 5.3 chevy engine4K/yr
- 5.3 rear main seal5K/yr
- rear main seal 5.33K/yr
Reviews and returns
What reviews say buyers love and hate about Ls Rear Main Seal
We read the reviews and the return reasons for every product selling here.
“Leaks”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Ls Rear Main Seal questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









