Dirty Hooker Diesel - Thermostat & Related

Replace your damaged or inaccurate temperature sensor with this quality AcDelco Replacement. Dont be fooled by cheap imitations. Do the job once. DHD only installs GM OE or AcDelco parts.

The plastic connector on this sensor often gets brittle and breaks during engine service. Inspect yours closely during assembly, a poor connection can cause a check engine light or erratic gauge operation. 

Interchange:

• GM 15326386
• Wells SU109

Fitment:

• 2001-2010 Duramax LB7, LLY, LBZ, LMM 6.6L

DHD 007-0292 Thermostat Lid Coolant Passage Plug LB7 LLY LBZ

This billet aluminum coolant plug will plug the open port on the thermostat coolant bridge on all LB7, LLY, & LBZ Duramax Diesels when removing the heater core hose.

This plug is popular among pullers and racers who wish to delete the heater and its associated plumbing.

Comes with O-ring.

DHD 007-0294 LML Rear Engine Cover Coolant Passage Plug

This plug will cap the open coolant passage port on the driver-side rear engine cover.

DHD 007-0295 LMM EGR Cooler Line Rear Fitting

This fitting will cap the open coolant passage port on the elbow right behind the oil cooler assembly. This cap is common for those running aftermarket headers & up-pipes or re-routing coolant lines around the EGR system.

DHD 007-0357 Brass Turbo Coolant Feed Plug

This plug is used when a non-water cooled aftermarket turbocharger is installed. This plug will cap the turbo thermostat hole in the upper steel radiator hose.

DHD 030-5001 Billet Rear Engine Cover Coolant Block Off Plate

DHD's Billet Coolant Passage Block Plate is used to stop the problematic Duramax coolant leak where the stock cast plate is installed on the rear engine cover. Use this to fix your current coolant leak or to prevent a possible future coolant leak. The plate is machined out of a block of billet aluminum and has a built in O-Ring for a 100% leak proof seal. No gasket is required for installation. 

Note: This is an excellent upgrade to perform when changing, upgrading downpipes. We recommend accessing this plate via the passenger side wheel well.

Features:

• Black Anodized Billet Aluminum
• Molded O-ring Seal
• Stainless Hardware Included

Fitment:

2001-2016 Duramax 6.6L LB7 LLY LBZ LMM LML

DHD 500-114 LMM Coolant Line Relocation Kit

When installing aftermarket manifolds or tubular headers on your 2007.5-2008 LMM Duramax Diesel you will notice that you will also have to reroute your EGR cooler line because of clearance issues. We have simple kit that will allow you to re-route your cooler line and allow the use of larger aftermarket exhaust manifolds and/or headers. Kit comes with everything needed to install.

This kit works well with RDL Cast Flow and PPE Race Manifolds by eliminating the coolant plumbing at the rear cover and directing it to the thermostat housing. 

Fitting configurations and hose lengths can be adjusted by installer for the best fitment.

DHD 500-304 Duramax Thermostat Housing to Heater Core Fitting 2004.5-07

DHD's Billet Coolant supply fitting replaces the OE steel EGR/heater core supply tube. This assembly is designed to fit into the front coolant bridge adjacent to the thermostat housing and is almost a must when doing a high flow intake install.

Confirmed fitment on LLY and LBZ trucks. May fit other years.

Note: Our fitting has been revised to work in conjunction with HSP's forward facing thermostat housing.

See pictures below:

DHD's billet fitting thermostat housing to heater core line kit makes heater core plumbing a breeze. This kit includes our billet coolant supply fitting that replaces the OE steel EGR/heater core supply tube, a billet triple seal heater core quick connect fitting and all the hose and hardware required. This kit will route coolant from the front coolant bridge adjacent to the thermostat housing to the heater core. 

Confirmed fitment on LLY and LBZ trucks. May fit other years.

This kit will work in conjunction with HSP's forward facing thermostat housing.

Kit Contents:

• (1) DHD 500-304 Billet Thermostat Outlet Fitting
• (1) Stainless Steel Triple Seal Heater Core Fitting
• 30" of Continental 5/8 Premium Heater Hose with Abrasion Resistant Sleeve
• (1) 8mm Stainless Socket Head Cap Screw
• Clamps, Zip Ties, Thread Tape

See picture below for suggested fitment:

This bracket provides a much needed solution for those looking to mount a SoCal water pump bypass kit on their truck. DP Customs bracket locates the billet bypass regulator block just to the right of the A/C compressor, making installation and plumbing a breeze.

Features:

1. Works with SoCal #SCDWPBP
2. Laser Cut & Formed 3/16 Plate Steel
3. Durable Black Texture Powdercoat Finish
4. Hardware Included
5. Pre-Threaded Holes for Bypass Mounting

Fitment:

• 2001-2011 Chevrolet/GMC Duramax 6.6L (Confirmed Fitment)
• 2011+ (Fitment Verification In Progress)

Note: This bracket will not work in conjunction with dual fueler trucks that have the 2nd pump mounted to the right of the A/C Compressor.

This bracket is for duel fueler equipped trucks only! For non-dual fueler trucks, see DP1 Bracket.

This bracket mounts the SoCal Diesel Waterpump Bypass directly behind the second CP3 on a dual fueler fitted 2001-2010 Duramax. This bracket also works with stock or aftermarket upper radiator hose routing. This simple bracket utilizes the AC compressor mounting bolts and provides a clean trouble free install. 

Features:

Works with SoCal #SCDWPBP

1. Laser Cut & Formed 3/16 Plate Steel
2. Durable Black Texture Powdercoat Finish
3. Hardware Included
4. Pre-Threaded Holes for Bypass Mounting
5. Shims provided for extra clearance on stock upper hose routing

Fitment:

• 2001-2010 Chevrolet/GMC Duramax 6.6L w/ Dual Fueler Kit
• Verified Fitment With PPE Kits 113061000, 113061100, 113063500, 113064100, 113064000, 113065000, 113067000

Replace this commonly cracked and spongy coolant bypass hose with this OE replacement from DHD.

Our techs often replace this hose during a LML CP4 replacement, LML fuel system service, LML CP3 Conversions or LML turbo charger service.

Replaces GM Hose 12639200.

This is a genuine GM Duramax Van Thermostat Housing. This is often a popular choice for many drag racers and sled pulling engine builds as it will allow for more clearance for custom coolant pipe configurations.

This forward facing thermostat housing will allow you to eliminate the cooling tube that crosses the drivers side valve cover. This rerouting opens up valuable under hood real estate and allows direct access to the injectors and valve cover.

This is an excellent addition to trucks with twin turbos and duel fuelers.

Save more room and simply your install with the addition of our Turbo Coolant Feed Plug 007-0357.

Replace your brittle, broken or leaking plastic heater core quick connect fitting with this stainless steel option from DHD. This stainless connector has triple the sealing provisions and features stainless internal locks for a leak free permanent replacement. If your tackling a head stud, head gasket or major service on your truck, do yourself a favor and add this to your cart! Our DHD shop techs love them.

Features:

• Improved design - this HVAC heater hose connector has been redesigned for greater durability the original equipment part
• Durable construction - this heater hose connector is made of stainless steel instead of the original equipment connector to reduce damage from heat fatigue and vibration
• Easy to install - matches the original equipment form and dimensions for a simple replacement
• Quality tested - this part has undergone try-on, corrosion, heat and pressure testing to ensure a quality fit and long service life

Fitment:

Works on all Duramax/GM trucks utilizing a 3/4" tube, 5/8" Hose quick connector at the heater core. Pair this fitting with DHD 500-304 heather core fitting to provide a high quality, leak free, clean install.

Replaces GM Numbers: