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84564686 Engine Block Heater Cord for Chevy Silverado Duramax
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 2, 2026 4:55 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
Universal Hardware supply
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓✅【Replacement For】: Direct replacement for GM part numbers 84564686, 84368753, 84744850, 84789749 engine coolant heater extension cable. Restores factory cold-weather package wiring on GM trucks so your block heater pulls power exactly like the OE cord – no cutting, no splicing, no adapters.
✓✅【Compatible With】: Fits 2019-2023 Chevy Silverado 1500/LD/LTD, 2020-2024 Silverado 2500/3500 HD Duramax, 2021-2024 GMC Sierra & Yukon/XL, 2021-2024 Chevy Tahoe/Suburban, 2023-2024 Colorado, Buick Envision 2021-2025 and Cadillac Escalade 2021-2024 with the factory front-bumper heater socket.
✓✅【Cold Start】: Plugs into the driver-side front bumper socket and delivers 120V power to the engine coolant heater. Keeps coolant warm overnight, so your Duramax or V8 fires up fast in freezing weather – less battery drain, less starter strain, no wasted winter mornings.
✓✅【Durable Build】: 16AWG copper core inside a cold-resistant silicone jacket rated for extreme winter use; weather-sealed 3-pin connectors and OE-style retaining clips hold the cable in place under the truck. No cracking, no brittle wires down to -30°F.
✓✅【No-Tools Install】: Direct plug-and-play swap – unplug the old cord, route the new one along the factory path, and you are done in about 15 minutes. No special tools, no wiring skills. Backed by responsive after-sales support.
⚙️ Specifications
Brand
Mektarvix
Number of Items
1
Item Highlight
Replacement for 84564686 – 120V 16AWG cord fits Silverado 1500/2500/3500 HD Duramax, no-tools cold-start plug-in
Model Number
84564686
Built-In Media
the product itself
Manufacturer
Mektarvix
Mfr Part Number
84564686
ASIN
B0HFM6KZ4V
Customer Reviews
5.0
Ships From
Amazon
Sold By
Universal Hardware supply