The Texas Speed LS3 Valley Cover is a direct replacement for the factory valley cover on GM LS3 engines, built to match the specifications of GM part number 12599296. It covers the lifter valley between the cylinder banks, sealing the engine against contaminants and debris while keeping the factory layout for sensors and ventilation.
Texas Speed engineers the cover to meet or exceed OEM standards for fit and to resist warping and cracking under heat and pressure, so it works both as a repair part for a worn or damaged cover and as a component in an LS3 performance build. Installation is straightforward on LS3 engines. Texas Speed also uses this cover in its Gen 4 Engine Conversion Package for Gen 3 vehicles.
Specifications
- Application: GM LS3 engines
- Replaces: Built to the specifications of GM part number 12599296
- Fit: Direct replacement for the factory valley cover
- Durability: Engineered to resist warping and cracking under high temperatures and pressures
- Engine family per Texas Speed: Gen IV LS 6.0/6.2
- Manufacturer part number: LS3-VC
Vehicle Applications
For GM LS3 6.2L engines. Vehicle list reflects the LS3-equipped applications in Texas Speed's fitment data.
Chevrolet Camaro
- 2010 Chevrolet Camaro
- 2011 Chevrolet Camaro
- 2012 Chevrolet Camaro
- 2013 Chevrolet Camaro
- 2014 Chevrolet Camaro
- 2015 Chevrolet Camaro
Chevrolet Corvette
- 2008 Chevrolet Corvette
- 2009 Chevrolet Corvette
- 2010 Chevrolet Corvette
- 2011 Chevrolet Corvette
- 2012 Chevrolet Corvette
- 2013 Chevrolet Corvette
Chevrolet SS
- 2014 Chevrolet SS
- 2015 Chevrolet SS
- 2016 Chevrolet SS
- 2017 Chevrolet SS
Vehicle applications reflect the fitment published by Texas Speed & Performance for this part number. Confirm your engine and cylinder head configuration before ordering.
FAQ
What engines does the Texas Speed LS3 valley cover fit?
Texas Speed lists this valley cover for GM LS3 engines as a direct replacement for the factory cover. Its fitment data covers the 2010 to 2015 Camaro, 2008 to 2013 Corvette and 2014 to 2017 Chevrolet SS LS3 applications.
What GM part number does this valley cover replace?
The Texas Speed LS3 valley cover is designed to match the specifications of GM part number 12599296, so it can be used anywhere that factory part number is called for on an LS3.
Is a gasket included with the Texas Speed LS3 valley cover?
Texas Speed's product page does not list a gasket or bolts as included with the LS3 valley cover itself. The same cover is supplied with gasket and bolts inside the Texas Speed Gen 4 Engine Conversion Package.
How is this different from the Texas Speed L92 truck valley cover?
This cover matches GM 12599296 for LS3 engines. Texas Speed sells a separate L92 truck valley cover without a PCV provision for L92-equipped trucks and SUVs, so choose the cover that matches the engine.
Can I use this valley cover on an LS2 or LS1?
Texas Speed describes this cover as a direct replacement for GM LS3 engines and lists it under the Gen IV 6.0/6.2 engine family. For other LS generations, Texas Speed offers its billet valley cover kit in Gen 3 and Gen 4 configurations.
