Muzzys 800-409 Upgraded Heater Core Connectors – Set of 2 for 3/4 inch inlets/outlets, 5/8 inch hoses (1998-2014 GM Trucks)
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Description
xUpgrade your heater core connections with the Muzzys 800-409. This set of two nylon connectors paired with two clamps is designed to replace cracked or leaking fittings on 3/4 inch inlets and outlets and 5/8 inch hoses. Built to be stronger than OEM parts, these connectors aim to deliver a reliable, snug fit that supports consistent coolant routing in daily driving and longer trips.
Key benefits at a glance
- Durable nylon construction that resists heat and coolant exposure, reducing the risk of future cracks.
- Includes two connectors plus two clamps for a complete replacement kit, helping you finish the job with fewer trips to the parts store.
- Enhanced fit compared to original equipment, designed to hold steady under everyday engine heat and vibrations.
- Broad compatibility across GM vehicles from 1998 to 2014, including popular trucks and SUVs, expanding repair options.
What you get and how to use it
- SET OF TWO CONNECTORS and TWO CLAMPS: nylon heater core connectors sized for 3/4 inch inlets/outlets and 5/8 inch hoses.
- Replacement guidance: remove the old connector with a heater hose disconnect tool, apply a bit of soapy water to ease installation, then push until you hear or feel a click. Clean tubes first and secure with the included clamps.
Notes on installation: ensure the heater core tubes are clean and free of crud to promote a solid seal. The kit is designed for a tight, reliable fit, but checking compatibility with your exact vehicle year and model is advised before installation.
Practical considerations
- Versatile for a wide range of GM trucks and SUVs from late 1990s through mid-2010s, offering a practical update path for aging connectors.
- While not a guarantee of performance, upgrading to a newer nylon connector can contribute to steadier coolant routing and reduced risk of leaks.
FAQ
Q: What is included in the SET OF TWO CONNECTORS and TWO CLAMPS?
A: Two upgraded nylon heater core connectors and two clamps sized for 3/4 inch inlets/outlets and 5/8 inch hoses.
Q: Which vehicles are compatible?
A: Fits 1998-2014 Chevrolet Silverado, GMC Sierra 1500/2500/3500, Tahoe, Suburban, Cadillac Escalade, Yukon, Avalanche, Express/Savana, and more.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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