• Top Street Performance GM LS1 / LS6 Trussed Style Engine Valley Cover - Black - for street and performance builds
1 1
Top Street Performance

GM Gen III LS Trussed Style Engine Valley Cover - Black

GM Gen III LS Trussed Style Engine Valley Cover - Black

SKU: 81043BK

$181.96
$181.96 $206.78
Shipping calculated at checkout.

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

  • Trussed-style aluminum cover seals and dresses up the LS intake valley
  • One-piece design includes mounting hardware — gasket sold separately
  • Fits GM LS1/LS6 and related Gen III/IV LS engines, 4.8L-6.0L
  • Confirm gasket pattern, knock sensor location & AFM/DOD before install

Description

This trussed style engine valley cover 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 correct valley cover layout is required.

Aluminum construction with a black finish upgrades the intake valley area while helping maintain a durable sealing surface for performance builds, restorations, and LS swaps. The trussed design adds a reinforced, structural appearance compared to a standard finned cover. The one-piece cover design includes mounting hardware; gasket is sold separately. Confirm gasket pattern, knock sensor location, and AFM/DOD provisions 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 configuration, 10 mounting holes. Mounting hardware included; gasket sold separately. Verify valley cover layout, gasket shape, knock sensor location, and AFM/DOD configuration before installation.

Specs

ColorBlack
ConfigurationOne Piece
Cover StyleTrussed
Gasket IncludedNo
Grade TypePerformance
Hardware IncludedYes
MaterialAluminum
Mounting Hole Quantity10

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 layout, 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's the difference between this and the finned valley cover?
This cover uses a trussed design, adding reinforced styling compared to TSP's standard finned valley cover (SKU 81045P) for the same LS1/LS6 engine family. Both include mounting hardware and require a separately-purchased gasket.

What engines does this valley cover 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).

Does this include a gasket?
No — mounting hardware is included, but gasket is sold separately.

How many mounting holes does this cover have?
10.

What's this cover made of, and what finish does it have?
Aluminum construction with a black finish and trussed cover style.

Emissions Notice

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