{"product_id":"throttle-body-spacer-for-chevrolet-avalanche-2003-2006-5-3l-8-1l","title":"Throttle Body Spacer for Chevrolet Avalanche (2003-2006) 5.3L 8.1L","description":"\u003ch2\u003ePrecision Billet Throttle Body Spacer for 2003-2006 Chevrolet Avalanche\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Optimizes incoming airflow velocity between the throttle body and intake manifold plenum to sharpen low-end throttle tip-in and engine response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Avalanche Intake Plenum Bottleneck\u003c\/h3\u003e\n\u003cp\u003eOn factory GMT800-series Avalanche trucks, the throttle body bolts flush against the composite intake manifold inlet. During initial throttle plate tip-in, this immediate transition generates abrupt air-charge shearing and boundary-layer turbulence at the runner entrance. This localized flow stagnation dulls off-idle throttle response, which is particularly evident when pulling heavy payloads, climbing grades, or maneuvering under high-load low-RPM conditions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eCNC-machined from aircraft-grade 6061-T6 billet aluminum, this spacer extends the pre-manifold transition zone, smoothing air charge delivery directly into the intake runners. The internal bore geometry stabilizes airflow, eliminating charge tumble and improving velocity profiling into the combustion chambers. An anodized surface finish protects against under-hood thermal oxidation, while included 304 stainless steel hardware maintains consistent clamping torque against manifold gaskets to eliminate unmetered vacuum leaks.\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;\"\u003e2003-2006 Chevrolet Avalanche\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 5300 (LM7\/L59), Vortec 8100 (L18) \/ GMT805 (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;\"\u003e285–340 hp \/ 325–455 lb-ft (Approx)\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\u003e2003-2006 Chevrolet Avalanche 1500 5.3L V8 (LM7 \/ L59 Vortec 5300)\u003c\/li\u003e\n  \u003cli\u003e2003-2006 Chevrolet Avalanche 2500 8.1L V8 (L18 Vortec 8100)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle severe-duty truck demands, this billet upgrade supports sustained towing performance and off-idle torque delivery without introducing vacuum integrity faults or check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50498889711864,"sku":"DS-EJE9M32AP","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-chevrolet-avalanche-2003-2006-5-3l-8-1l-1.jpg?v=1789274863","url":"https:\/\/performancechiptuning.com\/products\/throttle-body-spacer-for-chevrolet-avalanche-2003-2006-5-3l-8-1l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}