Set of 4 specialty bolts and nuts that mate the driveshaft to the differential flange on the 1990-1993 Miata with 1.6L engine and original 1.6L differential.

This is a BRAND NEW Set of 1990-1993 MAZDA Miata Driveshaft to Differential Bolt and Nut Set.
Set of 4 bolts and locking nuts as shown in photos.

NEW Bolts, specially modified for optimum performance in racing applications.
Will also work perfectly for street driving use.

Representative photos.

Bolts fit the driveshaft and differential used on 1990-1993 Mazda Miata.
Fits 1990-1993 Miata with 1.6L engine.

Bolts feature a flange face that has been specially machined for optimum locking against the differential flange to prevent loosening.
Bolts are 100% checked to confirm proper fitment.
Nuts also feature a serrated flange design that acts as a locking feature.

This NEW set of bolts/nuts eliminates the old fashioned Mazda split lock washer and standard steel bolt with high quality bolts. It is also rated at higher strength than the OE equivalent bolt.
The old Mazda factory driveshaft bolts, nuts, and washers are often worn and spin on worn differential drive shaft flanges.
This new bolt set is an improvement over the OE Mazda design and ensures that the bolts stay tight after they have been fully tightened.
Use OEM torque spec for these bolts. 21 Ft-Lb.

The flat that is machined into these New bolts is made to fit snug on a 1.6L differential flange.
All bolts are 100% checked and confirmed for proper fitment.

See the last 2 photos for reference on proper installation method on the driveshaft flange. Nut should be on the driveshaft side (facing the front side of the car).
4 bolts and 4 nuts are included in this listing.

*Note: Differential and driveshaft are not included - shown only for reference.