Chevrolet Silverado / Tahoe / Suburban / Avalanche / SSR, GMC Sierra / Yukon, Cadillac Escalade & Hummer H2 Billet Aluminum Throttle Body Spacer 1999 - 2007 (4.8L / 5.3L / 6.0L / 8.1L V8)

Improve throttle response and low-end torque on your GM full-size truck or SUV with this premium billet aluminum throttle body spacer, precision CNC-machined from aircraft-grade 6061-T6 aluminum for permanent durability and proven performance benefits. The spacer installs between the throttle body and intake manifold, increasing the air volume in the intake plenum and creating an air swirl effect that improves air/fuel mixing for noticeable gains in low-end torque, throttle response, and fuel efficiency under light-throttle driving. The integrated original silicon seal provides strong sealing performance with high-temperature and corrosion resistance, while the included 304 stainless steel mounting bolts (verified through 72-hour salt spray and 180-hour high-temperature testing) deliver reliable long-term clamping force in the harsh underhood environment.

Features:

• Premium 6061-T6 aircraft-grade billet aluminum construction – delivers exceptional strength, lightweight performance, and long-term durability
• CNC machined precision – precision-machined for perfect fit and finish to factory throttle body and intake manifold mounting points
• Integrated silicone seal – strong sealing performance with high-temperature and anti-corrosion properties
• 304 stainless steel mounting bolts – high-strength corrosion-resistant fasteners verified through Salt Spray Test (NSS 72 hours) and High Temperature Test (NSS 180 hours)
• Direct bolt-on installation – no modifications required, installs between factory throttle body and intake manifold
• Wide application compatibility – fits the entire GM full-size truck and SUV V8 lineup from 1999-2007

Specifications:

• Condition: 100% Brand New
• Type: Throttle Body Spacer
• Material: 6061-T6 Aircraft-Grade Billet Aluminum
• Construction: CNC Machined
• Sealing: Integrated Silicone Seal
• Mounting Hardware: 304 Stainless Steel Bolts
• Item Weight: 0.4 kg
• Quantity: 1 spacer per pack
• Position: Between Throttle Body & Intake Manifold
• Engine Compatibility: GM 4.8L / 5.3L / 6.0L / 8.1L V8
• Purpose: Performance Upgrade / Throttle Response Enhancement

Fitment:

Critical regulatory note: NOT for sale in California or states adopting CARB regulations. Pending Air Resource Board Exemption — verify legal compliance for your jurisdiction before ordering.

Cadillac Fitment:

• Cadillac Escalade (Including EXT & ESV) V8 5.3L Gas (2001 – 2005)
• Cadillac Escalade (Including EXT & ESV) V8 6.0L Gas (2001 – 2006)

Chevrolet Fitment:

• Chevrolet Avalanche V8 5.3L Gas (2002 – 2006)
• Chevrolet Avalanche V8 8.1L Gas (2002 – 2006)
• Chevrolet Silverado V8 4.8L Gas (1999 – 2007)
• Chevrolet Silverado V8 5.3L Gas (1999 – 2007)
• Chevrolet Silverado V8 6.0L Gas (1999 – 2007)
• Chevrolet Silverado 2500 HD V8 8.1L Gas (2001 – 2006)
• Chevrolet Silverado 3500 HD V8 8.1L Gas (2001 – 2006)
• Chevrolet SSR V8 5.3L Gas (2003 – 2004)
• Chevrolet Suburban V8 5.3L Gas (2000 – 2006)
• Chevrolet Suburban V8 6.0L Gas (2000 – 2006)
• Chevrolet Suburban V8 8.1L Gas (2001 – 2006)
• Chevrolet Tahoe V8 4.8L Gas (2000 – 2006)
• Chevrolet Tahoe V8 5.3L Gas (2000 – 2006)

GMC Fitment:

• GMC Sierra V8 4.8L Gas (1999 – 2007)
• GMC Sierra V8 5.3L Gas (1999 – 2007)
• GMC Sierra V8 6.0L Gas (1999 – 2007)
• GMC Sierra 2500 HD V8 8.1L Gas (2001 – 2006)
• GMC Sierra 3500 HD V8 8.1L Gas (2001 – 2006)
• GMC Yukon V8 4.8L Gas (2000 – 2006)
• GMC Yukon V8 5.3L Gas (2000 – 2006)
• GMC Yukon Denali V8 6.0L Gas (2001 – 2006)
• GMC Yukon XL V8 5.3L Gas (2000 – 2006)
• GMC Yukon XL Denali V8 6.0L Gas (2000 – 2006)
• GMC Yukon XL V8 8.1L Gas (2001 – 2006)

Hummer Fitment:

• Hummer H2 (Including SUT) V8 6.0L Gas (2003 – 2007)

Contents:

• 1x Billet Aluminum Throttle Body Spacer
• 304 Stainless Steel Mounting Bolts
• Integrated Silicone Seal

Benefits:

• Improved throttle response – the increased intake plenum volume and air swirl effect deliver noticeably sharper throttle response, particularly under light to moderate throttle inputs
• Enhanced low-end torque – the air swirl effect improves air/fuel mixing for better cylinder filling at low to mid RPM, where these full-size truck and SUV engines benefit most
• Improved fuel efficiency under cruise conditions – better air/fuel mixing reduces the need for heavy throttle application during normal driving, supporting modest fuel economy gains
• Premium 6061-T6 aircraft-grade billet aluminum construction permanently outlasts factory components and provides clean appearance for engine bay aesthetics
• 304 stainless steel mounting bolts deliver superior corrosion resistance compared to standard plated hardware – critical for long-term reliability in harsh underhood environments
• Integrated silicone seal provides reliable leak-free operation between the throttle body and intake manifold
• Wide cross-platform compatibility makes this a versatile upgrade for owners of multiple GM truck and SUV applications
• Direct bolt-on installation – straightforward DIY upgrade requiring no modifications or specialized tools

Important Regulatory Notes:

• NOT for sale in California – this product is pending Air Resource Board (ARB) Exemption and is not legally sold in California for street-driven vehicles
• NOT for sale in CARB-compliant states – includes other states adopting California Air Resources Board emissions regulations
• Verify legal compliance with your local emissions regulations before installing this product on a street-driven vehicle
• Off-road, race, and competition use applications are unaffected by these regulatory restrictions

Installation Notes:

• Engine compatibility verification required: Confirm your engine is one of the listed 4.8L / 5.3L / 6.0L / 8.1L GM V8 variants before ordering – this spacer is not compatible with other engine families
• Allow the engine to fully cool before beginning installation to avoid burns from hot engine components
• Disconnect the negative battery terminal before beginning installation to prevent electrical issues
• Carefully remove the throttle body from the intake manifold – disconnect throttle linkage, electrical connectors, and vacuum lines before removal
• Clean both the throttle body mounting flange and intake manifold flange thoroughly before installing the spacer – any debris or old gasket material will compromise sealing
• Position the spacer between the throttle body and intake manifold with the integrated silicone seal facing the correct direction per included instructions
• Use the included 304 stainless steel bolts to secure the throttle body and spacer assembly to the intake manifold
• Tighten all mounting hardware to factory torque specifications using a calibrated torque wrench – follow proper criss-cross torque sequence to prevent flange warping
• Reconnect throttle linkage, electrical connectors, vacuum lines, and battery terminal to their original positions
• Test for vacuum leaks using a smoke test or carb cleaner spray method to verify leak-free operation before driving
• Verify proper throttle operation through full travel range before driving – check for binding, sticking, or incomplete return to closed position
• After installation, scan for stored fault codes and clear any historical codes that may have accumulated during the modification
• Professional installation recommended if you are unfamiliar with throttle body service procedures
• If unsure about compatibility with your specific GM truck or SUV variant, contact our team with your year, model, and engine displacement before ordering

Warranty:

• 12-month standard warranty from date of purchase
• Contact our support team for assistance with any issues