Jaguar S-Type R Upper Supercharger Pulley Upgrade 4.2L (1.5LB)
Jaguar S-Type R Upper Supercharger Pulley Upgrade 4.2L (1.5LB). 2003-Present Jaguar S-Type R 4.2L V-8 Upper Supercharger Pulley Upgrade (1.5LB).
Eurotoys Ltd. was the 1st to offer/manufacture these Blower pulleys for the S-Type R 4.2L Jaguar.
This smaller supercharger pulley will give you a modest power improvement of 20-25HP. Factory boost is at 13.1 PSI*, this will raise the boost to approximately 14.5-15 PSI*. Your car will still retain the factory belt and “NO Modifications” to the blower are required.
Fits all Jaguar XJR, XKR, S-Type R with the 4.2L.
*Boost levels are subject to ambient air temperature, weather conditions and elevation.
**No ECU Tuning is required for this Supercharger Upgrade!
**The Rental program for this Special tool will cost $180.00. When the tool is returned undamaged, you will be refunded $120.00. So in the end, this tool rental will cost you $60.00 + Shipping (This tool can also be Purchased/Viewed in our Accessories section).
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