• Top Street Performance GM LS1, LS6 Neoprene Valley Cover Gasket - for street and performance builds
  • Top Street Performance GM LS1, LS6 Neoprene Valley Cover Gasket - front view - for street and performance builds
  • Top Street Performance GM LS1, LS6 Neoprene Valley Cover Gasket - side view - for street and performance builds
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Top Street Performance

GM Gen III LS Neoprene Valley Cover Gasket

GM Gen III LS Neoprene Valley Cover Gasket

SKU: 81047

$32.58
$32.58 $37.03
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In stock

Top Street Performance (TSP) is committed to providing high-quality performance parts while complying with emissions regulations. This product is designed for use on vehicles that comply with federal emissions regulations. It is the customer’s responsibility to verify that this part is legal for use in their state or local jurisdiction. Check with your local emissions authority before purchasing.

Product Details

Features

  • Neoprene/steel core gasket seals the valley cover, prevents oil leaks
  • Direct replacement for LS1/LS6 valley cover reinstallation or service
  • Fits GM LS1/LS6 and related Gen III/IV LS engines, 4.8L-6.0L
  • Pairs with TSP's LS1/LS6 finned or trussed valley covers

Description

This valley cover gasket is built for GM LS1/LS6 and related Gen III/IV LS applications, supporting 4.8L, 5.3L, 5.7L, and 6.0L engine combinations where the matching valley cover pattern is required.

Neoprene rubber/steel core construction seals the valley cover to the engine block, helping control oil leaks, crankcase sealing issues, and intake valley contamination during engine refreshes or LS swap work. Use this gasket when replacing, refinishing, or servicing a compatible LS valley cover — including TSP's LS1/LS6 finned or trussed valley covers. Confirm knock sensor location, AFM/DOD provisions, and cover style before installation.


Applications
Fits GM LS Series V8 engines: 4.8L/293 (LR4, LY2), 5.3L/325 (LM7, L59, L33, LC9, LH6, LY5, LMG), 5.7L/346 (LS1, LS6), and 6.0L/364 (LQ4, LQ9, LY6, L76, L96). Common applications include Chevrolet Silverado/GMC Sierra, Chevrolet Camaro/Corvette, Chevrolet Tahoe/Suburban/Yukon, and Pontiac GTO/G8, all LS-equipped.

Installation
One-piece gasket, 10 bolt holes. Verify valley cover gasket pattern, gasket shape, knock sensor location, and AFM/DOD configuration before installation. Crank seals not included.

Specs

Bolt Hole Quantity10
ColorBlack
ConfigurationOne Piece
Crank Seals IncludedNo
Gasket Style1-Piece
MaterialNeoprene Rubber/Steel Core
Seal MaterialNeoprene
Structure MaterialSteel

Engine Fitment

COMPATIBLE WITH
GM LS SERIES V8 ENGINES
• 4.8L / 293 in³ (LR4, LY2)
• 5.3L / 325 in³ (LM7, L59, L33, LC9, LH6, LY5, LMG)
• 5.7L / 346 in³ (LS1, LS6)
• 6.0L / 364 in³ (LQ4, LQ9, LY6, L76, L96)

NOTES
Verify LS1/LS6-style valley cover gasket pattern, gasket shape, knock sensor location, and AFM/DOD configuration before installation.

COMMON VEHICLE APPLICATIONS
Chevrolet Silverado / GMC Sierra (LS equipped)
Chevrolet Camaro / Corvette (LS equipped)
Chevrolet Tahoe / Suburban / Yukon (LS equipped)
Pontiac GTO / G8 (LS equipped)

Vehicle Fitment

Q&A

What valley cover does this gasket fit?
TSP's LS1/LS6 valley covers (finned, SKU 81045P, or trussed, SKU 81043C), or any compatible LS1/LS6-pattern valley cover.

What's this gasket made of?
Neoprene rubber with a steel core structure.

Does this include a crankshaft seal?
No — crank seals are not included.

What engines does this gasket fit?
GM LS Series V8 engines: 4.8L (LR4, LY2), 5.3L (LM7, L59, L33, LC9, LH6, LY5, LMG), 5.7L (LS1, LS6), and 6.0L (LQ4, LQ9, LY6, L76, L96).

How many bolt holes does this gasket have?
10.

Emissions Notice

This product does not affect vehicle emissions and is not subject to emissions compliance regulations.