Description
Product Overview
The SMMS Secondary Air Injection Check Valve is engineered for durability and precise performance. Constructed from high‑grade metal with a machined, metallic finish, the valve resists corrosion and wear under harsh engine conditions. It features a 1.13‑inch inlet and outlet, threaded UNF 1‑1/8″ connections, and a dual‑port design that mirrors OEM specifications. Certified under part numbers 12619109, 12597900, 2141945, and others, this valve ensures a direct fit for Chevrolet Colorado (2007‑2012 2.9L/3.7L), GMC Canyon (2007‑2012 2.9L/3.7L), and Hummer H3/H3T (2007‑2010 3.7L). Dimensions are compact at 5.8 x 5 x 4.5 inches, weighing just 2.29 lb, making it easy to handle during installation.
Usage
Designed for modern gasoline engines, this check valve regulates secondary air injection to reduce emissions during cold starts. It is ideal for daily drivers, fleet vehicles, and off‑road trucks that demand reliable emission control. Install the valve in the secondary air system to maintain optimal combustion, improve fuel efficiency, and meet EPA standards. 
Why Choose Us
SMMS combines rigorous engineering with strict quality control. Each valve undergoes CNC machining and thorough testing to guarantee leak‑free operation. Our 12‑month warranty and 30‑day satisfaction guarantee provide peace of mind, while our responsive support team assists with fitment questions before purchase. Compared with generic alternatives, SMMS offers exact OEM match, superior material strength, and consistent performance across a range of vehicle models.
Key Features
- Durable metal construction with machined finish for long‑term reliability
- Precise 1.13‑inch threaded connections ensure leak‑free installation
- Dual‑port design matches OEM flow rates for optimal emission control
- Direct fit for Chevrolet Colorado, GMC Canyon and Hummer H3 models
- 12‑month warranty and 30‑day return policy for risk‑free purchase
FAQ
What vehicles are compatible with this valve?
The valve fits Chevrolet Colorado (2007‑2012 2.9L/3.7L), GMC Canyon (2007‑2012 2.9L/3.7L), and Hummer H3/H3T (2007‑2010 3.7L) models.
Do I need any special tools for installation?
Standard hand tools such as a wrench or socket set are sufficient. Ensure the engine is cool and disconnect the battery before working on the air injection system.
Will this valve improve fuel economy?
By maintaining proper secondary air flow, the valve helps the engine achieve more complete combustion, which can lead to modest improvements in fuel efficiency.
Is this a direct replacement for the OEM part?
Yes, the SMMS valve matches the original equipment specifications, including part numbers 12619109, 12597900, and 2141945, providing a seamless swap.
What warranty does SMMS offer?
SMMS provides a 12‑month limited warranty and a 30‑day money‑back guarantee if you are not completely satisfied with the product.
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