Upgrade Fuel Injector Spacer Set of 8 Truck Intake Manifold to LS3 Injector Adapter LS3 L33 LM4 LM7 LR4 LQ4 LQ9 551287-LS-036

This spacer set allows you to adapt shorter LS3 fuel injectors into taller Gen 3 or Gen 4 LS truck intake manifolds and fuel rails, making it a go-to solution when swapping LS3 injectors onto an LS truck engine. Each spacer adds approximately 12.32mm (.48") of overall length to the fuel injector for a secure, leak-free seal in taller manifold applications. Machined from solid billet aluminum, these components provide consistent dimensions, high strength, and long-lasting performance under engine heat and pressure without cracking or deforming. The complete installation kit includes 8 injector spacers, 4 fuel rail riser spacers, and 4 matching fuel rail bolts — everything you need to get the job done right the first time

• Adapt LS3 Injectors with Ease: Designed specifically to let you run shorter LS3 fuel injectors on taller Gen 3 or Gen 4 LS truck intake manifolds and fuel rails — a direct solution for common swap clearance issues
• Perfect for LS Truck Injector Swaps: A go-to component when upgrading or replacing injectors on an LS truck engine with LS3 units, ensuring proper fitment without changing your intake setup
• Precise Length Extension: Each spacer adds approximately 12.32mm (.48") of overall length to the fuel injector, providing the exact height needed for a secure, leak-free seal in taller manifold applications
• Strong & Reliable Billet Aluminum Build: Machined from solid billet aluminum for consistent dimensions, high strength, and long-lasting performance under engine heat and pressure — no cracking or deforming
• Complete Installation Kit: Comes ready to install with 8 injector spacers, 4 fuel rail riser spacers, and 4 matching fuel rail bolts — everything you need to get the job done right the first time