Kooks Locking Ball and Socket Bolt Kit (2 Bolts/2 Nuts/Locking Hardware)

Kooks BK114 Ball and Socket Locking Bolt Kit for Collector Connections

The Kooks BK114 Ball and Socket Locking Bolt Kit addresses the common problem of exhaust leaks at header collector flanges caused by vibration and thermal cycling in high-performance applications, providing a flexible yet secure fastening system that accommodates minor misalignment while maintaining a gas-tight seal under extreme conditions.

Constructed from Grade 18-8 stainless steel, this kit includes four M10 x 75mm hex head flange bolts with serrated bases and matching locking nuts, allowing for 15-degree angular adjustment to ensure even clamping pressure on 3-inch or larger collectors without stress fractures. Designed for use in conjunction with primary header bolts like BK109 or BK113, it prevents loosening during sustained high-RPM operation or off-road impacts, supporting exhaust systems rated for 1,000+ horsepower.

For enthusiasts installing Kooks long-tube headers on GM LS/LT, Ford modular V8s, or Chrysler HEMI engines, this kit delivers the precise, durable connection needed to sustain power gains and sound quality over thousands of miles.

Key Features

• Ball and Socket Design: Allows 15-degree swivel for perfect alignment on uneven collector flanges.
• Grade 18-8 Stainless Steel: Serrated flange bolts and locking nuts resist corrosion and withstand exhaust temperatures over 1,400°F.
• M10 x 75mm Sizing: Extended length suits 3-inch and larger merged collectors on long-tube headers.
• Locking Mechanism: Integrated serrations and nylon-insert nuts prevent rotation from engine harmonics.
• 4-Piece Set: Complete for one side (8 pieces for full V8 system) hex heads for standard 15mm wrench use.
• High-Load Capacity: Rated for repeated torque to 30-35 ft-lbs without galling.

Product Notes

• Required accessory for many Kooks header kits purchase additional sets for full dual-bank installations.
• Compatible with T304 stainless collectors apply anti-seize to threads for easier future disassembly.
• California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
• Not a standalone primary bolt kit pair with engine-specific header bolts (e.g., BK109 for Ford Coyote).
• Warranty: Limited lifetime to original purchaser against manufacturing defects.

Installation Notes

• Clean mating surfaces and apply high-temp anti-seize to bolt threads and serrated faces.
• Assemble ball/socket loosely, align collector, then torque nuts to 30-35 ft-lbs in opposing pairs.
• Recheck torque after 50-100 miles of operation to account for heat settling.
• Professional header installation recommended adds 10-15 minutes to collector assembly.

This Part Fits

Universal accessory for Kooks header systems on V8 engines with 3-inch+ merged collectors, including:

Note: Fits any Kooks header kit requiring collector bolts; one kit per side (2 total for V8).

What's Included in the Purchase

• (4) M10 x 75mm Hex Head Flange Bolts (Serrated, 18-8 Stainless)
• (4) M10 Locking Hex Flange Nuts (Nylon Insert, 18-8 Stainless)
• Part Number: Kooks BK114

Why Choose Kooks?

• Over 60 years of exhaust engineering, with championships in NHRA, NASCAR, and SCCA.
• Handcrafted in the USA from premium stainless steel for unmatched precision.
• Limited lifetime warranty and dyno-tested for real-world reliability.

Frequently Asked Questions

• Q: How many kits do I need for a full V8 header install?
  A: Two kits (one per bank) for complete collector fastening on V8 engines.
• Q: What torque spec should I use?
  A: 30-35 ft-lbs on the nuts; use a calibrated wrench to avoid over-tightening.
• Q: Does this replace standard collector bolts?
  A: Yes, specifically for ball/socket applications in Kooks systems requiring angular adjustment.

Shipping & Handling

• Method: Standard ground UPS/FedEx.
• Availability: In stock and ships within 1-2 business days.
• Packaging: Total Package Weight: 0.8 lbs 
• Shipping Dimensions: 6" L x 4" W x 1" H (compact boxed for standard ground shipment)