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Tomei Head Studs
Tomei Head Studs have been designed so that the bolting force is dispersed to all the screw threads and high bolting power is generated.
In order to secure the performance required of head gaskets, such as cooling, rigidity, and sealing, it is necessary to strengthen the combination of a cylinder head and a cylinder block. However, in combination with a common bolt and nut, bolting power concentrates on from third groove to the 1st groove of the screw, and the total bolting power cannot be increased beyond a certain value. Moreover, excessive stress is concentrated and may damage the bolt. Stud bolts, on the other hand, have been designed so that the bolting force is dispersed to all the screw threads and high bolting power is generated.
Features
- BOLT STRETCH LIMITS
- ROTATING SURFACE HEAT TREATMENT
- ANGLE TORQUE BOLT TIGHTENING METHOD
We ship to the United States and 150 other countries.
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| Vehicle | Part | Price | Order |
|---|---|---|---|
| 193003 Back in stock 15 Nov 2026 at Tomei | |||
| RB26DETT | Size M12 P1.50 Bolts X 14, Nuts X 14 | | |
| Vehicle | Part | Price | Order |
|---|---|---|---|
| 193071 In stock at Tomei | |||
| 4AGE for 16V Only | Size: M10xP1.25, Bolt x10, Nut x10, Washer x10, Assembly Nut x4 | | |
| Vehicle | Part | Price | Order |
|---|---|---|---|
| 193021 | |||
| 4G63 | Size M11 P1.50/M11 P1.25 Bolt X 14, Nut X 14, Washer X 10 | | |
| Part | Price | Order |
|---|---|---|
| 193018 | ||
| Size M11 P1.50 Bolts X 14, Nuts X14 | DISCONTINUED This part is no longer available | |
About Tomei
Tomei was founded in 1968 by members of the Johoku Riders motorcycle club, among them Nissan works driver Seiichi Suzuki. It began as a racing engine builder for Nissan engines only, and its work on the Nissan L-series and later the RB and SR engines made its name. The company took the name Tomei Powered when it moved to Machida, Tokyo, in 1994.
Tomei now develops parts for many Japanese engines, Mitsubishi, Subaru and Toyota as well as Nissan: camshafts, valve train parts, pistons, connecting rods and crankshafts, complete engines, and exhaust systems such as its well-known Expreme titanium range.
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About NENGUN
Since the year 2000, NENGUN has supplied over 500,000 parts direct from Fukuoka, Japan to 170 countries worldwide. If you have any questions, our experienced and friendly customer service team is always happy to help, please send us an enquiry.
