Genuine GM Timing Cover Water Jacket / Water Pump Seal 12691259 – Suits Holden Commodore VE/VF 3.6L Alloytec & SIDI V6

Genuine GM Timing Cover Water Jacket Seal 12691259 is the OEM coolant passage seal located between the engine block and the timing cover on GM’s 3.6L Alloytec and SIDI V6 engines. This seal allows coolant to pass through the block into the timing cover, where it continues to the water pump mounted on the front of the engine.

When servicing the timing cover, or repairing coolant leaks at the front of the engine, this Genuine GM seal should always be renewed. Designed to withstand high heat and continuous coolant exposure, it ensures proper sealing between the timing cover and block, preventing coolant loss and maintaining system pressure.

Fitment:

• Holden Commodore VE / VF (3.6L Alloytec & SIDI V6)
• Holden Calais VE / VF (3.6L Alloytec & SIDI V6)
• Holden Caprice WM / WN (3.6L Alloytec & SIDI V6)
• Holden Statesman WM (3.6L Alloytec V6)
• Holden Captiva (3.6L Alloytec / SIDI V6 – LE0, LY7, LLT, LFX)

Specifications:

• OEM Part Number: 12691259
• Application: Between engine block and timing cover
• Material: High-temperature coolant-resistant elastomer
• Function: Seals coolant transfer passage to water pump housing
• Engine Family: GM 3.6L Alloytec / SIDI V6 (LE0, LY7, LLT, LFX)

Key Features:

• Genuine GM OEM part – engineered for precise fit and factory sealing
• Prevents coolant leaks between timing cover and block
• Withstands constant coolant flow and heat cycles
• Essential when refitting timing cover or replacing water pump
• Direct-fit replacement – no modification required

Installation Tip: Always inspect mating surfaces on the block and timing cover for corrosion or pitting. Clean thoroughly before installing the new seal and torque the cover evenly to maintain proper compression on the sealing surface.