Stud - Locknut - Washer Combo

Sinco D.I.Y.

Sale $8.30 $7.47

or 4 interest free payments of $1.87 withlearn more
Size and thread pitch

Save time & buy your studs - locknuts & washers together in one easy kit!

These turbo studs are ideal for fitting any turbo to manifold or to replace the exhaust manifold studs in your head.

Do I use studs or bolts??

We recommended using studs instead of bolts for x2 main reasons, If you are using bolts over time the more you pull your turbo off and on the more you will wear out the threads in your turbo flange (this thread is a lot harder to repair when stripped). When studs are fitted to your turbo flange you will remove a nut from the stud and this can easily be replaced once worn out.

The second reason is a 8mm lock nut has a 12mm head size (spanner size) and a 10mm lock nut has a 14mm. This means you will have a lot more clearance around the turbo housing when tightening the lock nut. For a 8mm bolt the head size is 13mm and a 10mm bolt can be 16mm or 17mm.

Kit Includes : 

x1 Stud 

x1 Locknut 

x1 Hardened washer

NOTE: Please choose your desired size & thread pitch


  • Thread size used in T2 inlet flanges, Evo heads & Rb26
  • Overall length = 40mm


  • This thread is used on all SINCO manifold turbo flanges
  • Suits RB - 2JZ - 1JZ - SR20 - CA18 - 4G63 and more
  • Overall length = 40mm


  • Used to replace your factory exhaust manifold studs & for turbo manifold flanges
  • 13b & Barra run 10x1.5 threads for exhaust manifolds
  • Overall length = 40mm

Returns & Refunds

SKU: Combo 8x1.25

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