MB WILLYS SLAT GRILL CYLINDER HEAD BOLT
TR-Marked Cylinder Head Bolt for Willys MB Slat Grille
Part number WO-638635
High-quality reproduction cylinder head bolt with correct TR marking, as originally fitted to early Willys MB Slat Grille jeeps. Manufactured from high-tensile steel (10.9) to original specifications for reliable cylinder head fastening on L-134 chain-driven engines.
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Material High-tensile steel 10.9 |
Marking TR (Tork Rivet Supply Co.) |
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Part Number WO-638635 |
Quantity per Engine 9 pieces |
Features
- Correct TR marking as per original
- High-tensile steel 10.9 specification
- Tested to 140 lb/ft (double recommended torque)
- Manufactured to original WWII specifications
- Suitable for chain-driven L-134 engines
★ High-quality reproduction manufactured to original military specifications. Tested to double the recommended torque for maximum reliability during restoration.
Application
Specific to Willys MB Slat Grille jeeps (serial numbers MB100001 through MB125809, production November 1941 - March 1942). Also applicable to early standard Willys MB and Ford GPW with chain-driven L-134 engines and early CJ-2A models. Note: at MB engine 288835 (July-August 1943), Willys switched to a configuration using cylinder head studs only.
Installation notes
Torque specification: 65-70 lb-ft (approximately 88-95 Nm) for bolts. Tighten in cross sequence according to TM 10-1513 specifications. Check tension after 500-600 miles of use. 9 cylinder head bolts are required per engine (early production MB/GPW used a combination of 9 bolts + 6 studs).
Compatibility
ONLY for chain-driven L-134 engines as used in Willys MB Slat Grille, early Willys MB, Ford GPW and early CJ-2A. NOT suitable for later Willys MB from engine serial number 288835 (mid-1943), which switched to a configuration using cylinder head studs only. NOT compatible with gear-driven engines from late CJ-2A, CJ-3A, CJ-3B or M38.
Historical context
The Willys MB Slat Grille, produced between November 1941 and March 1942, was the very first production version of the standardised military jeep. Of the total MB production of 361,339 units during WWII, only 25,808 examples were Slat Grille variants, making these rare collectors' items.
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This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : BOLTS 01 ENGINE
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |