MED ALLOY WATER PUMP PULLEY

MED ALLOY WATER PUMP PULLEY

Part No: MED-1422-WP
Regular price £55.00 £45.83 EXC VAT
Regular price Sale price £55.00 £45.83 EXC VAT
Sale
Availability: In Stock
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Description

Two larger pulley sizes (4.220" and 4.720") are available, designed to slow the water moving through the radiator to allow it time to cool - an important factor on any high-RPM race engine.


For reference, the original stock pulley measured 3.875".




Please note - on installation you must first check for clearance between the pulley and cylinder head, especially where the head has been heavily skimmed.

Frequently Asked Questions

Which size pulley would you recommend?

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For most fast road engines we would suggest the 4.220" option, as the largest pulley is best suited to engines with sustained high RPM levels.

Will I need to run a different size fan belt?

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Possibly, yes, but this also depends on the crankshaft pulley and alternator/dynamo pulley diameters. We keep two fan belts that will suit - 825mm, for use with an MED S-pulley, standard alternator and 4.220" water pump pulley, and 838mm, for MED S-pulley, large alternator pulley and/or 4.770" water pump pulley.

Which engines do these water pump pulleys suit?

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Any A-Series engine apart from the very last MPi Minis.

Will these fit all A-Series water pumps?

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Yes, whether you have one of our MED-5701-WP race water pumps, or a standard-fitment item.