{"product_id":"trq-intake-manifold-compatible-with-buick-rainier-chevy-trailblazer","title":"TRQ Intake Manifold Compatible with Buick Rainier Chevy Trailblazer","description":"\u003cp\u003eIn this review of the TRQ Intake Manifold the bottom line is simple: it is a cost-effective, vehicle-specific OE replacement for owners of 4.2L I6 models who need a direct-fit upper intake manifold. The reviewer found it useful for routine replacement and for addressing EGR-related flow problems, though fitment and seam finish were mixed across installs. If you need an aftermarket replacement that follows factory routing and includes the gasket, this TRQ assembly is worth considering, but buyers should check the listing fitment carefully before purchase.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Fit:\u003c\/strong\u003e Designed as an OE replacement to match factory mounting points for the listed 4.2L I6 vehicles, reducing modification during installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Specific:\u003c\/strong\u003e Fitment covers model years and variants including Trailblazer, Envoy, Rainier, Bravada, Ascender and Saab 9-7X so buyers can confirm compatibility in the listing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Upper Assembly:\u003c\/strong\u003e The unit is the upper intake manifold and arrives as a single piece to simplify replacement of the worn or cracked original.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Included:\u003c\/strong\u003e Ships with the required gasket or seal to help prevent immediate vacuum leaks when installed correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket Reference Numbers:\u003c\/strong\u003e Lists reference numbers 615-567, 8890178000 and 89017551 to aid verification and parts matching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Constructed from durable plastic designed to resist corrosion and reduce weight compared with metal alternatives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis intake manifold is aimed at owners and independent mechanics working on 4.2L inline-six GM-family SUVs and crossovers from the early to mid 2000s who want a direct-fit aftermarket replacement rather than sourcing an OEM reman or used unit. It is particularly useful if the original part shows cracks, warped sealing surfaces, or if EGR-related clogging has impacted intake routing.\u003c\/p\u003e\n\u003cp\u003eShoppers who require perfect OEM cosmetic finish or who are extremely sensitive to seam appearance may want to inspect the part closely on arrival or consider a dealer-supplied OEM unit. Also confirm the exact model year and vehicle variant in the listing before purchase to avoid fitment issues.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFunctionally restores intake flow and can resolve EGR-related flow problems when the manifold is the root cause.\u003c\/li\u003e\n\u003cli\u003eIncludes the gasket, which helps speed installation and reduces the need to source additional parts.\u003c\/li\u003e\n\u003cli\u003eGood value compared with buying a new OEM assembly, and many users report solid long-term functionality.\u003c\/li\u003e\n\u003cli\u003eCoverage across many 4.2L I6 models makes it useful for multi-vehicle shops or owners with compatible SUVs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome customers report mixed fitment and occasional vacuum leaks around the spider seal or seams, so careful installation and inspection are advised.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Engines\u003c\/td\u003e\n\u003ctd\u003eL6 4.2L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Fitment\u003c\/td\u003e\n\u003ctd\u003eTrailblazer, Envoy, Rainier, Bravada, Ascender, Saab 9-7X (see listing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eYears Covered\u003c\/td\u003e\n\u003ctd\u003e2002-2007 (varies by model)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eUpper intake manifold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003ePlastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGasket Included\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Numbers\u003c\/td\u003e\n\u003ctd\u003e615-567, 8890178000, 89017551\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe TRQ intake manifold is a practical, affordable OE-style replacement for owners of 4.2L I6 GM vehicles who need a functioning upper manifold and gasket included. While fitment and seam finish can vary, its overall functionality and value make it a reasonable choice for DIY repairs and independent shops when the listing confirms compatibility.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this manifold fit my 2004 Buick Rainier?\u003c\/strong\u003e\u003cbr\u003eYes, the TRQ upper intake manifold lists compatibility with the 2004-07 Buick Rainier L6 4.2L, but always verify exact year and engine variant in the product listing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include the necessary gasket?\u003c\/strong\u003e\u003cbr\u003eYes, the product ships with the gasket or seal included to help prevent immediate vacuum leaks when installed correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre there common installation issues?\u003c\/strong\u003e\u003cbr\u003eSome installers report mixed seam quality and occasional vacuum leaks around the spider seal, so inspect sealing surfaces and torque hardware to spec during installation.\u003c\/p\u003e","brand":"TRQ","offers":[{"title":"Default Title","offer_id":48199714635995,"sku":"B0B76RTP3K","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61S3av2eI2L._AC_SL1500.jpg?v=1770320874","url":"https:\/\/gearmusthave.com\/products\/trq-intake-manifold-compatible-with-buick-rainier-chevy-trailblazer","provider":"GearMustHave","version":"1.0","type":"link"}