{"product_id":"throttle-body-spacer-for-gmc-sierra-2003-2007-4-8l-5-3l-6-0l-6-2l-8-1l","title":"Throttle Body Spacer for GMC Sierra (2003-2007) 4.8L 5.3L 6.0L 6.2L 8.1L","description":"\u003ch2\u003eBillet Throttle Body Spacer for 2003-2007 GMC Sierra\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Lengthens the intake plenum track between the throttle body and intake manifold to enhance air charge velocity and improve low-end throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Sierra Plenum Volume Limitation\u003c\/h3\u003e\n\u003cp\u003eFactory Vortec intake manifolds on GMT800 trucks suffer from abrupt runner transitions and limited pre-runner plenum volume. Under sudden throttle opening, the intake tract experiences localized boundary-layer separation and turbulent low-velocity air right past the butterfly valve. This dead volume delays throttle tip-in response and restricts instantaneous cylinder filling, which is especially noticeable under heavy hauling or low-RPM acceleration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis throttle body spacer is precision CNC-machined from aircraft-grade 6061-T6 billet aluminum, engineered with an open-bore, helical-profile air path that stabilizes intake air column velocity before entering the runner split. The increased volume between the throttle plate and plenum floor improves cylinder scavenging and eliminates turbulence at off-idle transitions. Finished in a corrosion-resistant anodized coating, the spacer includes 304 stainless steel hardware to prevent thread galling and ensure a leak-free seal without throwing lean condition trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2003-2007 GMC Sierra\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eVortec Gen III\/IV (LR4, LM7, LQ4, LQ9, L92, L18) \/ GMT800\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e275-345 hp \/ 290-455 lb-ft (Engine Dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003-2007 GMC Sierra 1500 (4.8L V8, 5.3L V8, 6.0L V8)\u003c\/li\u003e\n  \u003cli\u003e2003-2007 GMC Sierra 1500 HD (6.0L V8)\u003c\/li\u003e\n  \u003cli\u003e2003-2007 GMC Sierra 2500 \/ 2500 HD (6.0L V8, 8.1L V8)\u003c\/li\u003e\n  \u003cli\u003e2003-2007 GMC Sierra 3500 \/ 3500 HD (6.0L V8, 8.1L V8)\u003c\/li\u003e\n  \u003cli\u003e2007 GMC Sierra 1500 Denali (6.2L V8)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe GMC Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe duty cycles, this solid billet spacer withstands sustained manifold vacuum, engine-bay heat soak, and heavy towing strain without warping or introducing unmetered air leaks.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50498889810168,"sku":"DS-E6U85HD30","price":63.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/throttle-body-spacer-for-gmc-sierra-2003-2007-4-8l-5-3l-6-0l-6-2l-8-1l-1.jpg?v=1789274891","url":"https:\/\/performancechiptuning.com\/es\/products\/throttle-body-spacer-for-gmc-sierra-2003-2007-4-8l-5-3l-6-0l-6-2l-8-1l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}