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Product details
EMPI 98-8736-B is a 50mm double-end stud with M8-1.25 threads on both ends and an unthreaded middle, used on air-cooled VW engines at intake, exhaust, oil pump, and fuel pump mounting points. It references VW part number N143968. One end threads into the case or cylinder head and the other takes an 8mm nut that clamps the part being mounted. A stud that pulls out with a seized nut or snaps off is the usual reason to need one.
This is the longer of EMPI's two M8-1.25 double-end studs. The shorter one is the 38mm 98-8739-B. Pick the length by measuring the stud you removed, or the flange, gasket, washer, and nut it has to pass through. Single port heads have 6mm threads, and for those EMPI makes the 98-8740-B M6 x 1.0 / M8 x 1.25 repair stud. A stripped oil sump plate stud takes EMPI's 98-8735-B 6mm/8mm step stud after the case is tapped to 8mm.
Technical Details
- Manufacturer: EMPI
- Manufacturer part number: 98-8736-B
- Reference part number: N143968
- Thread: M8-1.25, both ends
- Overall length: 50mm
- Center section: Unthreaded
- Sold as: Each
Fitment & Compatibility
Fits air-cooled VW engine locations that use an M8-1.25 stud of this length. Stud length varies by location, so match the one you are replacing.
Installation & Tuning Notes
Clean the hole threads, lock two M8 nuts together on the outer end, and drive the stud in with the inner nut. Stop once it is fully seated.
Common Questions
Is this one stud?
Yes, each unit is a single stud.
Will it fit the 6mm intake holes in single port heads?
No. Use EMPI's 98-8740-B repair stud, which has a 6mm end for the head and an 8mm end for the nut.
