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Dorman 911-643 Secondary Air Injection Check Valve
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 3, 2026 3:25 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
WunderCarParts
🚚 Shipping
Free Shipping
Product Details
✓Direct replacement - this secondary air injection check valve is designed to match the fit and function of the original valve on specified vehicles
✓Restores functionality - this valve is made to fit and fully restore part functionality after the original valve fails
✓Durable construction - this part is made from quality materials to ensure reliable performance and long service life
✓Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience
✓Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool
✓Please check the “Amazon Confirmed Fit” bar at the top of this page before buying product to ensure this product works for your vehicle. If the “Amazon Confirmed Fit” bar has an “i” in a blue circle, this product has additional notes. Please hover over the “i” on the bar to see notes before making your purchase.
⚙️ Specifications
Category Slug
automotive
Stock State
Buyable
Material
Metal
Brand
Dorman
Item dimensions L x W x H
8.66 x 5.32 x 5.32 inches
Exterior Finish
Machined
Inlet Connection Size
8.66 inches
Inlet Connection Type
Female Iron Pipe
Outlet Connection Type
NPT
Number of Ports
2
Outlet Connection Size
8.66 inches