**NOTE This product listing is for you if you want to purchase the alternator and water pump pullies as a set.
Add some bling to your engine bay while also reducing the rotating mass of your engine. We designed these billet aluminum pullies to drop right in place of your crusty steel pullies. They are CNC machined out of 6061 aluminum, blue anodized, with laser engraved markings to add some flare.
Fits all 1.8L MX-5 Miatas from 1994-2005. It also fits 1.6L cars if you swap over a 1.8L crank pulley and belt at the same time. Note: Alternator pulley fitment varies from NA to NB pullies. Make sure you select the pulley that matches the alternator in your car. Even if you have an NB engine in your NA, you likely have an NA alternator.
OEM PULLEY WEIGHTS VS R THEORY PULLEY WEIGHTS:
OEM Water Pump Pulley: 15oz (425 grams)
R Theory Water Pump Pulley: 9.20oz (260 grams)
OEM Alternator Pulley: 5.35oz (151 grams)
R Theory Alternator Pulley: 2.30oz (65 grams)
-1 Alternator Pulley
-1 Water Pump Pulley
-3 Stainless Steel Water pump Bolts