Fitment questions?
Call (855) 786-7101 or text (801) 304-3141.
Real people. Real answers.
Product details
The EMPI 00-4012-0 is a set of eight case saver inserts with a 10mm-1.5 inside thread and a 14mm-2.0 outside thread, used to repair stripped or worn 10mm head stud threads in a VW air-cooled crankcase. The set holds eight inserts. Each insert threads into a case that has been drilled and tapped for its 14mm outside thread, and the stock-size 10mm head stud then threads into the insert. EMPI notes that case savers give the studs greater hold than the worn threads they replace, and that the engine must be disassembled and the case machined to install them.
EMPI makes two inserts for 10mm studs, and the outside thread is the difference. This 14mm-2.0 version is the larger of the pair. The 00-4011-0 set uses a 1/2-20 outside thread, which is about 12.7mm, and it is also available singly as 00-4011-7. If a case has already been fitted with the smaller insert and one has pulled, the larger outside thread gives the machinist fresh material to cut. For 8mm studs, EMPI's inserts are 00-4003-0 (14mm-2.0 outside) and 00-4004-0 (12mm-1.5 outside). Plan new studs at the same time; EMPI's 10mm chromoly stud kits for dual port heads come in stock length (00-4009-0) and 1/2 inch longer (00-4010-0) for strokers.
Technical Details
- Manufacturer: EMPI
- Manufacturer part number: 00-4012-0
- Inside thread: 10mm-1.5
- Outside thread: 14mm-2.0
- Quantity: 8 inserts
- Sold as: set of 8
Fitment & Compatibility
For VW air-cooled crankcases using 10mm-1.5 head studs. Installation requires a disassembled engine and a machined case. Confirm the stud thread in your case and agree on the insert size with your machine shop before ordering.
Installation & Tuning Notes
The holes must be drilled and tapped for 14mm-2.0 square to the case deck. A crooked insert leaves a crooked stud, which makes the head and barrel hard to seat evenly.
Common Questions
How many inserts come in the set?
Eight. Count the damaged stud holes on your case, and order singles or a second set if you need more.
Will this repair an 8mm stud hole?
No. It is for 10mm studs. EMPI's 8mm inserts are 00-4003-0 and 00-4004-0.
PMB Performance can help sort out stud and insert sizes during a case rebuild.
