XDP Radiator Coolant Drain Pipe XD328

PART# XD328 | SKU XD328
★★★★★ ★★★★★ 4.8 (20 Reviews)

Vehicle Fitment For:
2006-2019 GM 6.6L Duramax LLY/LBZ/LMM/LML/L5P

See full application list below
NOTES: The XD328 has only been tested for use on the OEM hoses. In some cases, performance silicone hoses may not maintain the same diameter internally causing a loose fit. Ple
$59.95

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Description

Eliminate the hassle of servicing the cooling system in your 2006-2019 GM 6.6L Duramax with the XDP Radiator Coolant Drain Pipe XD328. Draining the cooling system in your truck requires removal of the lower radiator hose. Once that hose is removed, you'll find yourself scrambling trying to contain the mess of over 4 gallons of coolant. While some use buckets, kiddie pools, and many other methods, none solve the real issue of trying to eliminate the mess and contain the coolant so it can be re-used or properly disposed of without splashing all over the floor of your shop, garage, or driveway. 

The XDP Radiator Coolant Drain Pipe XD328 helps you keep things clean and controlled during routine maintenance. With the included ball valve that has a 3/8" NPT drain outlet, you can drain your cooling system with just the turn of a lever. Built from CNC machined billet aluminum, the XD328 installs in-line with one easy cut through the lower factory radiator hose. Simply cut the hose, slide the XDP Radiator Coolant Drain Pipe in place, and tighten down the included T-bolt clamps to complete the installation. Each drain valve comes ready to install and is anodized black for aesthetics and corrosion resistance.  

Features:
  • Black Anodized Finish
  • Simply Cut Existing Hose & Install 
  • CNC Machined Billet Aluminum Construction
  • Allows Easy Controllable Draining Of Cooling System 
Manufacturer Warranty*:
2 Year / Unlimited Mileage
Note: The XD328 has only been tested for use on the OEM hoses. In some cases, performance silicone hoses may not maintain the same diameter internally causing a loose fit. Please be aware of what kind of hoses are on your truck before purchasing this product.

Instructions & Tech Info

Installation Info

Reviews For XDP XD328

Overall Rating
4.8/5
20 Reviews
Rating Snapshot
5 ★
15
4 ★
5
3 ★
0
2 ★
0
1 ★
0
Verified Buyer
★★★★★ ★★★★★
Make you life easier
BNC (Utah) | March 16th, 2026
Fast delivery, easy install, good product.
Verified Buyer
★★★★★ ★★★★★
Radiator fluid drain Pipe
John Maddox | December 26th, 2024
I have yet to install this because my truck is at the body shop. This is truly a quality part that is worth the cost. Well made and the clamps are quality too!
Verified Buyer
★★★★★ ★★★★★
Great product!!!
Phil (Wyoming) | July 14th, 2024
Order#2308282 I have been looking for a cut in tee for a while , this one worked great for me. I have a 2008 LMM with no drain on the radiator.
Verified Buyer
★★★★★ ★★★★★
Perfect fit no leaks
Mike (Connecticut) | June 9th, 2024
Installation was easy and it makes draining the coolant system on my LML an easy task compared to the nightmare without it. It would be nice if it came with a plug for the outlet to keep dirt out but for a few bucks at an auto parts store that was no big deal. They should install these at the factory.
Verified Buyer
★★★★★ ★★★★★
Coolant drain
Brent (Arizona) | February 14th, 2024
I know you don’t change coolant much but this product is way easier than pulling the lower radiator hose off just to drain enough fluid to work on your truck
Verified Buyer
★★★★★ ★★★★★
Well worth it
Jay (Maryland's eastern shore) | June 10th, 2023
High quality part including the clamps. No leaks! If you do your own maintenance, this will make your work much easier and cleaner.
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Frequently Asked Questions

Can you please provide the outside diameter of this coolant drain pipe?
The XDP Radiator Coolant Drain Pipe XD328 has an outside diameter of 1-3/4".
Do y’all know what thread pitch the female drain side is?
The XDP Radiator Coolant Drain Pipe XD328 has a 3/8" NPT out let for the drain.
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More to Consider

Specifications For XDP XD328

MPN XD328
SKU XD328
GTIN 856217008632
ID 34858
Manufacturer Name XDP
Shipping Weight 1.00 lb.
Shipping Length 5 in.
Shipping Width 5 in.
Shipping Height 5 in.
Fuel Type Diesel
Manufacturer Warranty* 2 Year / Unlimited Mileage
Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal L15R21

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