ARP Mazda Miata Head Stud Kit

SKU: 218-4701 | UPC: 672036023331

ARP 1990-2005 Mazda Miata Head Stud Kit

ARP Head Stud Kit 218-4701 fits 1990-2005 Mazda Miata models equipped with 1.6L DOHC (1990-1993) and 1.8L DOHC (1994-2005) engines. These studs provide even clamp load to seal head gaskets under boosted or high-RPM conditions. Engineered for Miata enthusiasts chasing dependable power on street track or strip.

Key Features

• 8740 Chromoly Steel Construction: Heat-treated to 200,000 PSI tensile strength withstands extreme cylinder pressures
• Stud-Over-Bolt Design: Minimizes block thread wear for precise repeatable torque values
• Rolled Parallel Threads: Increases fatigue strength by 25% over cut threads for long-term reliability
• 12-Point Nuts & Hardened Washers: Ensures secure hold-down with anti-vibration locking
• Application-Matched Lengths: Direct fit for Mazda BP-series engines with no modifications needed

Product Notes

• MPN 218-4701 manufactured by ARP in the USA
• Category Engine Components Head Stud & Bolt Kits
• Shipping weight 2.1 lbs box dimensions 10 x 7 x 2.5 inches

Installation Notes

• Professional installation recommended.
• Clean cylinder head and block threads use ARP Ultra-Torque lubricant
• Torque to 60-65 ft-lbs in ARP sequence re-torque after 500 miles

This Part Fits

Year	Make	Model	Submodel
1990-1997	Mazda	Miata	Base
1993	Mazda	Miata	LE
1994-1997	Mazda	Miata	M Edition
1991	Mazda	Miata	SE
1997	Mazda	Miata	STO
1999	Mazda	Miata	10th Anniversary
1999-2005	Mazda	Miata	Base
2000-2005	Mazda	Miata	LS
2000-2003	Mazda	Miata	SE
2003	Mazda	Miata	Shinsen
2004-2005	Mazda	Miata	Mazdaspeed

Why Choose ARP?

• Decades of motorsports use in drag racing road racing and endurance events
• 8740 alloy exceeds OEM specs for clamp load in forced-induction setups
• Precision machining and quality control from aerospace-grade processes

Frequently Asked Questions

• Q: Does this kit fit both NA and NB Mazda Miata engines?
  A: Yes fits 1.6L DOHC NA (1990-1993) and 1.8L DOHC NA/NB (1994-2005) BP-series engines
• Q: What material are the studs made from?
  A: High-strength 8740 chromoly steel heat-treated to 200,000 PSI with rolled threads for fatigue resistance
• Q: What is the ARP warranty?
  A: Lifetime warranty against manufacturing defects in materials or workmanship when installed per instructions

Shipping & Handling

• Method: UPS Ground or USPS Priority Mail
• Availability: In stock – ships same or next business day
• Packaging: Secure ARP box 10 x 7 x 2.5 inches
• Weight: 2.1 lbs