GM Genuine Parts®Verified to fit 28 vehicles
| Vehicle | Trim | Engine | Notes |
|---|---|---|---|
| 2022 Chevrolet Express 3500Lower | — | L4 2.8L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2010 Chevrolet Silverado 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2010 Chevrolet Silverado 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2010 GMC Sierra 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2010 GMC Sierra 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2009 Chevrolet Silverado 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2009 Chevrolet Silverado 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2009 GMC Sierra 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2009 GMC Sierra 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2008 Chevrolet Silverado 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2008 Chevrolet Silverado 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2008 GMC Sierra 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2008 GMC Sierra 3500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2007 Chevrolet Silverado 2500 HD | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
| 2007 Chevrolet Silverado 2500 HD Classic | — | V8 6.6L | Note: CORE SIZE 34 15/16 X 23 5/16 X 2 3/16|CONNECT OUTLET HOSE W/2 RET #25806515 |
WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, known to the State of California to cause cancer and reproductive harm. Service the vehicle in a well-ventilated area, wear gloves, and wash your hands. See www.P65Warnings.ca.gov/motor-vehicle-parts
Guaranteed fit — or free return
Guaranteed to fitFits your vehicle or we pay the return. Learn more
If a part we confirmed for your vehicle does not fit, we cover the return shipping and refund you in full. That is the fitment guarantee.
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Nobody likes buying a part that turns out to be wrong. So if it doesn't fit, send it back for a full refund at no cost to you — return shipping is on us — and we'll help you get the right one.
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Every part is covered for 24 months. Many brands add their own manufacturer warranty on top.
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GM Genuine Parts Lower Radiator 21686
Guaranteed fit or free return
GM Genuine Parts Lower Radiator 21686
In stock· ships today
FREE shipping · Get it by Tue, Oct 20
Delivering to your area ·
FREE delivery between Tue, Oct 20 to Tue, Oct 20
Ships To:Key Features
About This Radiator
This GM Genuine Parts automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- •Unusual noises from the component area
- •Decreased vehicle performance
- •Warning lights on dashboard
- •Visible wear or damage
- •Failed vehicle inspection
GM Genuine Parts
Trusted Automotive Brand
GM Genuine Parts is a trusted manufacturer of quality automotive parts.
View all GM Genuine Parts productsInstallation Guide
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The GM Genuine Parts Radiator (21686) is a direct-fit replacement for 2006-2022 Chevrolet and GMC vehicles. UPC 707773249963. In stock and ships free.
About This Product
Radiator
The GM Genuine Parts Radiator (21686) is a direct-fit replacement for 2006-2022 Chevrolet and GMC vehicles. UPC 707773249963. In stock and ships free.
This GM Genuine Parts automotive component is engineered to meet or exceed OEM specifications for reliable performance and long service life.
Key Features
- Meets or exceeds OEM specifications
- Direct-fit replacement design
- Rigorously tested for durability
- Professional-grade construction
- Backed by manufacturer warranty
Signs This Part Needs Replacement
- Unusual noises from the component area
- Decreased vehicle performance
- Warning lights on dashboard
- Visible wear or damage
- Failed vehicle inspection
Brand-first. Fitment-obsessed.
We only sell brands automakers trust, and we double-check the fit on every listing.
Top curated brands only
The brands automakers put on the car.
Obsessed with fitment
Year, make, model, trim, engine, plus the fine print.
Search any part number
Your old part, a competitor, or the dealer #. We confirm the match.
Shop owner? Get BuffyPro business pricing
Fitment Obsessed
Every part checked against your exact year, make, model, trim, and engine.
Wrong Fit? On Us.
Free return shipping, no restocking fee — the fitment guarantee.
Brands OEMs Trust
The names automakers actually put on the car.
Millions of Parts, One Promise
If we say it fits, it fits.