Welcome to the premier destination for GM Genuine Parts Intake Manifolds, where OEM precision meets unbeatable reliability. This category features two standout products: the 55570283 Intake Manifold Kit with Multi-Port Fuel Injector and Fuel Rail for comprehensive upgrades, and the 12639087 Intake Manifold Assembly for straightforward replacements. Whether you're restoring a classic GM engine or maintaining a modern powerhouse, these parts ensure seamless integration, enhanced airflow, and peak performance, saving you from the pitfalls of mismatched aftermarket options.
Why Choose GM Genuine Parts Intake Manifolds?
GM Genuine Parts stand out as the gold standard for Chevrolet, GMC, Buick, and Cadillac owners. Engineered by General Motors themselves, these intake manifolds deliver exact-fit compatibility, superior materials like reinforced composites and aluminum, and rigorous testing to OEM specifications. Unlike generic alternatives, they minimize vacuum leaks, optimize fuel distribution, and withstand extreme temperatures, extending engine life and boosting efficiency.
As part of the broader Engines & Engine Parts ecosystem, these manifolds address common issues like gasket failures, cracking, or plastic degradation in high-mileage vehicles. Shoppers in our Replacement Parts section appreciate the peace of mind from genuine components that maintain factory warranties and resale value.
Key Features and What to Look For
When selecting an intake manifold, prioritize compatibility with your vehicle's engine code, such as LS-series or Vortec V6/V8. GM Genuine Parts excel in:
- Precise Design: Multi-port configurations for even fuel atomization and power delivery.
- Integrated Components: Some kits include fuel rails and injectors, reducing installation variables.
- Durability: Heat-resistant construction to prevent warping under hood heat.
- Emissions Compliance: Meets EPA standards without sacrificing performance.
Consider your needs: opt for a full kit if upgrading fuel delivery, or a basic assembly for bolt-on repairs. Always cross-reference part numbers with your GM service manual for the best fit within the Intake Manifolds & Parts lineup.
Comparing Our GM Genuine Parts Models
The 55570283 Intake Manifold Kit stands as a complete solution, bundling the manifold with multi-port fuel injectors and a robust fuel rail. Ideal for vehicles experiencing injector clogs or rail corrosion, this kit restores factory fuel pressure and spray patterns, making it perfect for performance builds or heavy-duty applications like trucks and SUVs.
In contrast, the 12639087 Intake Manifold Assembly focuses on the core manifold structure, suited for targeted replacements where injectors remain serviceable. It's lighter, easier to install solo, and commonly fits popular models from the early 2000s onward. Both deliver identical OEM airflow dynamics, but the kit edges out for all-in-one convenience.
For those exploring alternatives, brands like Dorman Products Intake Manifolds offer budget-friendly options, while A-Premium Intake Manifolds provide aftermarket enhancements. However, GM Genuine Parts prioritize longevity and spec-matching for discerning GM enthusiasts.
Installation Tips and Common Use Cases
Installation typically requires basic tools: torque wrench, gasket scraper, and RTV sealant. Expect 2-4 hours for most jobs, remove plenum, clean surfaces, torque bolts in sequence (e.g., 89 in-lbs inner, 18 ft-lbs outer). Common applications include fixing rough idles, hesitation, or CEL codes (P0171/P0174) in Silverado, Tahoe, or Impala engines.
Pair with gaskets and throttle body cleaners from our Engine Parts category for a full refresh. Regular maintenance prevents carbon buildup, ensuring these manifolds perform for 100,000+ miles.
Frequently Asked Questions
What warranty comes with GM Genuine Parts Intake Manifolds?
These parts carry GM's standard limited warranty, typically 24 months/unlimited miles when installed by certified technicians. Always register for extended coverage through your dealer.
How do GM Genuine Parts compare to aftermarket competitors?
GM Genuine outperforms most aftermarket in fit precision and material quality, reducing comeback repairs. For cost savings, check GELUOXI Intake Manifolds, but expect potential fitment tweaks.
Which model should I choose: 55570283 Kit or 12639087 Assembly?
Select the 55570283 Kit for fuel system overhauls; go with the 12639087 Assembly for manifold-only swaps. Verify your engine code via VIN decoder.
Are these compatible with modified engines?
Yes, but confirm port matching with cams or heads. They're optimized for stock GM setups within Automotive applications.
Does GM offer customer support for these parts?
Access support via GM's parts hotline or dealer network. Online resources include fitment guides and install videos for seamless service.
