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Timing belt kit (NA6 big nose)

Thermostat neck o-ring not shown
Timing belt kit (NA6 big nose)
Everything you need for a timing belt change!

Availability: In stock



Our timing belt kit is a little more expensive because it includes the tensioner and idler pulleys. We find that almost every Miata needs new ones when doing a timing belt. It also includes the timing belt (made by Continental), cam seals, front crank seal, a valve cover gasket, thermostat neck O-ring and a CAS O-ring. Accessory belts sold separately. Don't get caught on a Saturday afternoon without parts you need!    

This kit does not include a new tensioner spring, as it doesn’t need to be replaced. The tensioner spring doesn’t move back and forth during normal operation, it just pulls the tensioner pulley into the correct position during installation – it could actually be removed once the tensioner bolt has been tightened. Therefore, the spring isn’t fatigued and doesn’t need to be replaced.

This kit is for the "long nose" 1.6 engines, with an eight-slot front crank pulley and a VIN higher than 209446.

We also have a full tool kit to help make this easier for you.

Additional Information

Additional Information

Part number 04-80000 1991-93
Fits: 1991, 1992, 1993
Manufacturer No
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions No information at this time

Customer Reviews 1 item(s)

A very convenient kit.
This is a very complete kit. And it is convenient to have all the seals, and o-rings and the crank-key, for the following simple reason: you never know what you are going to find until you open up the front of the engine. The kit would be improved by the inclusion of one more o-ring, and that is Mazda Part Number E301-15-287 "Water Inlet Tube O-Ring". Given the age of the 1.6L engines all the O-rings have hardened. When the water-pump is being replaced, this O-ring joint is disturbed when water feed to the pump is moved to the side. So with a 25+ year old engine on a complete front end, timing belt / water pump service, that O-ring really should be replaced.

Note from FM: this O-ring is included with our water pumps.
Review by Robert in LA / (Posted on 6/6/2018)
Instructions for this part are not currently available online.