Performance Water Pump Timing Chain & Head Gasket Kit for Dodge Durango (2004-2007) 4.7L

Heavy-Duty Timing Chain, Water Pump & MLS Head Gasket Overhaul Kit for 2004-2007 Dodge Durango (HB)

What it Does: The Performance Timing Chain, Water Pump, and MLS Head Gasket Kit provides a complete overhaul solution for the 2004-2007 Dodge Durango to restore valvetrain synchronization, prevent coolant-to-oil cross-contamination, and maintain optimal operating temperatures under load.

The Stock Dodge Durango Timing and Cooling System Weakness

The factory PowerTech 4.7L V8 in the second-generation HB chassis is widely known for thermal stress and valvetrain vulnerabilities. Factory composite head gaskets degrade under localized overheating, leading to warped cylinder heads and catastrophic compression loss. Compounding this, OEM nylon-faced timing chain tensioner guides become brittle with extended thermal cycles, fracturing and allowing timing chain slack. This chain slap leads to cam-crank desynchronization, jumped timing, and valve-to-piston contact. Additionally, the OEM water pump features an impeller prone to cavitation and bearing breakdown at higher mileages, starving the rear cylinders of adequate coolant flow.

The Engineering Solution

This comprehensive kit remedies critical failure modes by replacing vulnerable factory wear items with heavy-duty components. The cylinder heads are sealed using multi-layer steel (MLS) head gaskets paired with high-tensile cylinder head bolts to ensure uniform clamping load and eliminate combustion blow-by. Valvetrain geometry and timing accuracy are restored via precision-link timing chains, high-strength cast-iron tensioners, and reinforced guide rails. Accompanied by a high-flow mechanical water pump and a high-volume oil pump, this master kit addresses oil pressure deficiencies at idle while maintaining cooling efficiency across extreme towing duty cycles.

What's Included

• 1 Multiple Layers Steel (MLS) Head Gasket
• 1 Valve Cover Gasket
• 1 Valve Stem Seals
• 1 Intake Manifold Gasket
• 1 Exhaust Manifold Gasket
• 1 Front Camshaft Seal
• 1 O-rings
• 1 Other Small Gaskets
• 28 Cylinder Head Bolts (20 Long Bolts, 8 Short Bolts)
• 1 Timing Chain Lower (70 Links)
• 2 Timing Chain (106 Links-Secondary 2 Required)
• 1 Tensioner Right (Secondary Tensioner)
• 1 Tensioner Left (Secondary Tensioner)
• 1 Tensioner Primary (Tensioner & Guide Plate)
• 2 Guide Rail (Tensioner Rail 2 Required)
• 2 Guide Rail (Fixed Rail 2 Required)
• 1 Sprocket Right (30 Teeth With Jtec Ring)
• 1 Sprocket Left (30 Teeth Has No Ring)
• 1 Crank Sprocket (25 Teeth)
• 1 Idler Sprocket (50 Teeth Primary)
• 1 Idler Sprocket (Secondary-Dual 30/30 Teeth)
• 1 Engine Water Pump
• 1 Oil Pump

Technical Specifications

Compatibility

• 2004 Dodge Durango 4.7L V8
• 2005 Dodge Durango 4.7L V8
• 2006 Dodge Durango 4.7L V8
• 2007 Dodge Durango 4.7L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the HB Durango?

Yes, this is a direct fit for the 2004-2007 Dodge Durango equipped with the PowerTech 4.7L V8 engine; it does not fit models equipped with the 3.7L V6 or 5.7L HEMI V8 engines.

Which camshaft tone ring configuration does the right-hand cam sprocket support?

The included right-hand camshaft sprocket features the 30-tooth JTEC pattern; verify your Durango's engine controller type prior to assembly to ensure correct sensor synchronization.

The Dodge Truck Caliber

Engineered to handle severe utility, heavy payloads, and sustained towing conditions, this full overhaul kit reinforces your HB Durango powertrain to deliver robust durability and reliable low-end torque mile after mile.