SKU: 201-6104 | UPC: 672036032791
ARP 1988-1991 BMW E30 M3 S14 Rod Bolt Kit
ARP rod bolt kit 201-6104 fits the BMW E30 M3 S14 2.3L engine from 1988 to 1991. These high-strength fasteners replace OEM bolts to secure connecting rods under high-rpm stress. Built for durability they maintain clamp load through heat cycles and high horsepower applications.
Key Features
- ARP2000 Alloy Steel: Rated at 200,000 psi tensile strength resists fatigue and stretching in boosted or naturally aspirated S14 builds
- Rolled Threads: Processed after heat treatment for 1000% greater fatigue strength than cut threads and accurate torque values
- Precise Fit: Application-specific dimensions match BMW S14 connecting rods for drop-in replacement without machining
- Complete Set of 8 Bolts: All hardware included covers full inline-4 engine reassembly with matched components
- Track-Proven Design: Handles street driving track days and drag racing with consistent performance
Product Notes
- Inspect connecting rods for wear before installing new bolts
- Apply ARP Ultra-Torque lubricant on threads and under bolt heads
- Compact lightweight kit ships quickly without oversize fees
Installation Notes
- Professional installation recommended.
- Torque to ARP specs: 59 ft-lbs initial plus 90 degree angle turn using ARP lube
- Re-torque after 500 miles or first heat cycle
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1988-1991 | BMW | M3 | Base |
Why Choose ARP?
- Brand standard in motorsports from NHRA to endurance racing
- Extensive testing ensures bolts outperform stock under extreme loads
- Precision manufacturing guarantees repeatability in every kit
Frequently Asked Questions
- Q: Does this kit fit all 1988-1991 BMW E30 M3 S14 engines?
A: Yes ARP 201-6104 bolts are direct replacements for OEM M10x1.5x70mm rod bolts on all US-spec S14B23 engines in E30 M3 models. - Q: What material and strength rating?
A: Forged ARP2000 8740 chrome moly steel heat-treated to minimum 200,000 psi tensile strength with rolled threads for superior fatigue resistance. - Q: What warranty applies?
A: ARP offers a one-year warranty against manufacturing defects when installed and torqued per instructions.
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Compact box 6 x 4 x 1 inches
- Weight: 0.31 lbs
