Water pump belt & pully kit. Porsche 928 S4 / 928 GTS  ❭  WATERPUMP.928S4.OEM

Water pump belt & pully kit
This OE Match water pump belt and pulley kit is a replacement engine cooling and timing service kit for Porsche 928 S4 and 928 GTS models. It includes the water pump, RD tooth timing cam belt, camshaft tensioner roller, and camshaft idler roller required for key front engine timing and cooling system service.

Fits:
Porsche 928 S4 5.0L
Porsche 928 GTS 5.4L

The kit helps restore correct coolant circulation and camshaft timing operation. The water pump circulates coolant through the engine cooling system, while the timing cam belt, tensioner roller, and idler roller work together to maintain correct camshaft drive, belt routing, and belt tension.

Functions
• Replaces the water pump
• Replaces the RD tooth timing cam belt
• Includes camshaft tensioner and idler rollers
• Supports correct coolant circulation
• Helps maintain accurate camshaft timing
• Supports correct belt tension and belt tracking
• OE Match replacement kit for Porsche 928 timing belt and cooling system service.

Why Replace This Kit?
Timing belt and water pump components are subject to age, mileage, heat, coolant exposure, bearing wear, and constant engine load. A worn timing belt can crack, stretch, lose teeth, or fail, while worn rollers can become noisy, rough, loose, or seized. A failing water pump can leak, become noisy, or reduce coolant circulation. Replacing these components together during service helps protect the engine and supports long-term reliability.

When to Replace This Kit
•  Timing belt service interval is due
•  The timing belt is cracked, worn, contaminated, or aged
•  The water pump is leaking, noisy, or showing bearing wear
•  Camshaft rollers are noisy, rough, loose, or seized
•  Coolant circulation or engine temperature issues are present
•  Front engine timing components are being serviced
•  Preventative replacement is being carried out during major maintenance.

Where it fits on the car
This kit fits at the front engine timing belt and water pump area on Porsche 928 S4 and 928 GTS models. It supports both the engine cooling circuit and the camshaft timing belt drive system.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

WATERPUMP.928S4.OEM

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