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SKU: 201-4602 | UPC: 672036020545
ARP BMW 535i 535is 635CSi 735i 735iL Head Stud Kit 1985-1993
The ARP Head Stud Kit 201-4602 provides dependable cylinder head fastening for BMW M30 engines in 1985-1993 535i, 1988 535is, 1985-1989 635CSi, 1985-1992 735i, and 1988-1992 735iL models. These studs replace factory bolts to maintain clamp load under boosted pressures and high RPMs in performance setups. Engine builders rely on ARP for consistent performance in demanding applications.
Key Features
- 8740 Chromoly Steel Construction: Heat-treated for 190,000 PSI tensile strength to resist stretch and fatigue in high-stress conditions
- Rolled Threads: Formed after heat treatment for precise fit and resistance to stripping during high-torque installation
- Complete Kit Contents: Includes 10 studs (8mm x 1.25 x 215mm), hardened parallel ground washers, and 12-point nuts for complete cylinder head assembly
- Precision Fit: Matches BMW M30B25 and M30B30 cylinder head bolt locations with no modifications required
- Reusable Components: Built for repeated disassembly and reassembly without loss of clamping integrity
Product Notes
- Verify M30 engine code prior to purchase for proper fitment
- Pair with ARP Ultra-Torque lubricant for accurate torque values
- Kit arrives in protective packaging to prevent component damage
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications: 55-65 ft-lbs initial plus angular steps using provided instructions
- Chase cylinder head and block threads with 8mm x 1.25 tap before assembly
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1985-1993 | BMW | 535i | Base |
| 1988 | BMW | 535is | Base |
| 1985-1989 | BMW | 635CSi | Base |
| 1985-1992 | BMW | 735i | Base |
| 1988-1992 | BMW | 735iL | Base |
Why Choose ARP?
- Established leader in high-performance engine fasteners since 1968
- Used in professional racing engines for proven durability
- Made in USA with tight tolerances for repeatable performance
Frequently Asked Questions
-
Q: Does this kit fit 1987 BMW 535i models?
A: Yes it fits all listed 1985-1993 535i Base models equipped with M30 engines -
Q: What material are the studs made from?
A: Forged 8740 chromoly steel heat-treated to 190,000 PSI tensile strength with rolled threads -
Q: What warranty comes with this ARP kit?
A: Lifetime warranty against material or manufacturing defects when properly installed per ARP instructions
Shipping & Handling
- Method: UPS Ground
- Availability: In stock - ships same or next business day
- Packaging: Protective retail box 2 x 6 x 8 inches
- Weight: 2 lbs
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