Perkins 4.108 Header Tank Cap

Perkins manufactured three marinised versions of Perkins 4.108 engines over the years, each with different options for the header tank used. See photos for height dimensions.

• 'Early' engines have the combined header tank/heat exchanger at the front of the engine and were fitted with a 60 mm diameter winged cap - for these engines choose our 'short reach' cap.
• 'Lowline' engines have the header tank at the front of the engine (heat exchanger at the rear) and were fitted with a larger 70 mm diameter round cap- choose our 'large' cap.
• The later engines were fitted with a Bowman type combined heat exchanger fitted on the exhaust side of the engine and were fitted with a 60 mm winged cap - standard fitment is our 'short reach' cap, but some early versions of this unit work better with our 'long reach' cap. To help you choose, please measure your cap height and compare with our annotated drawing above.

Material for header tank cap: We offer Zinc plated or Stainless steel options.

• A standard zinc plated steel cap with a stainless steel spring and brass internals or
• An Repaird double sealed 304 Stainless steel cap with a stainless steel spring and brass internals, ideal for a marine application
• Double seal on 'winged cap options only'
• Made in England from high quality components

UK, European and Worldwide shipping available.

Need more spares for your Perkins engine? Browse our full selection of Perkins 4.108 engine parts or check out our complete Perkins parts collection for all models.