CNC Billet Aluminum Radiator Cap.
This is the exact item we use on our radiators, expansion tanks and swirl pot setups. We have had issues sourcing quality parts like this so we decided to work directly with CNC machining company to make our own style cap. These are machined from high quality 6061 aluminum and are available in raw or black anodized finish. Check our store for different pressure and color options as well.
Brand: Straightboost Performance
Cap Pressure: 1.1 Bar / 16PSI
Cap Color: Anodized Black
Fits 42mm Radiator Necks (42mm ID)
Cap OD: 70mm
What is Included:
1x Pressure cap
We sell the necks as well. Be sure to check our store for complete Cap/Weld Neck packages.
*** PLEASE MEASURE YOUR RADIATOR FILL NECK BEFORE PURCHASING!! THIS CAP FITS LARGE FILL NECK S THAT ARE 42mm ID. This means that your radiator fill neck must be 42mm inner diameter for this cap to fit. Furthermore, some radiator necks are slightly larger and you may have to slightly file down the mounting ears on our cap (usually about 0.5mm on each side).***
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