Why Head Studs > Head Bolts (Every Time)

OEM head bolts:

• Stretch when torqued
• Lose clamping force under heat and boost
• Don’t handle repeated installs

ARP Studs Fix Everything:

• Greater clamping force than bolts
• More accurate torque readings (studs don’t twist like bolts)
• Even load distribution across the head gasket
• Reusable hardware for multiple builds

Translation: your head gasket actually stands a chance.

(D16Y7) Built for the Honda Civic… Obtaining the optimum cylinder head-to-block sealing is especially critical in small displacement engines employing high compression pistons or power adders like turbochargers, nitrous oxide and superchargers. That’s why ARP head studs are popular among leading Sport Compact/Import racers.

Vehicle Fitment (Honda / Acura B-Series)

The ARP 208-4305 kit is designed for Honda and Acura B-series engines, including:

Compatible Engines:

• B16A / B16B
• B17A
• B18A / B18B
• B18C1 / B18C5 (GS-R / Type R)

Found In:

• Honda Civic Si (EM1, EG, EK swaps)
• Acura Integra (GS, LS, GS-R, Type R)
• Del Sol VTEC

Ideal For:

• Turbocharged builds
• High compression NA builds
• Track and drag applications
• Full engine rebuilds

If you’re boosting a B-series and still running stock bolts… you’re basically asking for a head lift.

You will have to know that ARP uses a premium grade 8740 alloy that may be rated far superior to “aircraft” quality. Then, every stud is precisely heat-treated to 200,000 psi. Following heattreat, every stud is centerless ground to make it as close to perfectly concentric as imaginable.

Key Features

• High Performance ARP alloy studs
• 12-point nuts for precise torque application
• Hardened washers included
• Black oxide finish for corrosion resistance
• Complete stud kit for cylinder head installation

This procedure involves about ten very slight cuts and ends up in an exceptionally straight part. You must note that lesser quality studs don’t seem to be even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine).

Performance Benefits

• Prevents head lift under boost
• Maintains consistent gasket sealing
• Supports high horsepower and high RPM builds
• Improves long-term engine reliability

No coolant mixing with oil. No random misfires. No rebuilds you didn’t plan for.

Installation Notes

• Use ARP Ultra-Torque lubricant for accurate torque
• Torque in proper sequence and stages
• Ideal install during:
  • Head gasket replacement
  • Engine builds
  • Forced induction upgrades

Because ARP studs are manufactured to such exacting tolerances, You’ll note that gaskets and cylinder heads literally go with the flow into position and are perfectly aligned something that may not happen with inferior quality head studs.ARP studs are thread rolled after heat-treat, which gives them about 1000% (that’s ten times) better fatigue strength than those studs that are threaded prior to heat-treat.

You’ll also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force one that compensates for head gasket compression when the head is installed. This helps prevent blown head gaskets, and assures optimum sealing!

Why ARP?

Because when it comes to head sealing:

• Failure = catastrophic
• Cheap hardware = guaranteed problems
• ARP = proven, repeatable reliability

Final Verdict

The ARP 208-4305 Head Stud Kit is a must-have for any serious B-series build pushing beyond stock power.

It’s one of the most important upgrades you can make—and one of the worst ones to skip.

Package Dimensions : 5.588 H x 22.098 L x 10.414 W (centimeters)
Package Weight: 2.35 pounds
Made in USA
Fit Type: Vehicle Specific