ARP L19 Head Stud Kit
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ARP L19 Head Stud Kit - Mitsubishi 4G63 - Lancer Evolution IV–IX (CN9A / CP9A / CT9A) - 7-Bolt
This ARP head stud kit suits the 4G63 7-bolt engine in the Mitsubishi Lancer Evolution IV–IX. It swaps the factory head bolts for studs, nuts and washers. The studs are wound into the block by hand and the head is clamped by torquing the nuts, which gives more even, repeatable clamping than factory stretch bolts and saves wear on the block threads each time the head comes off.
More clamping load helps the head gasket seal against high cylinder pressure, which is why head studs are one of the first parts fitted to a boosted or high-compression build.
Material: L19 steel.
Before you order: L19 steel must be kept oiled and away from moisture.
See the Vehicle Fitment tab for the full list of vehicles.
Note: Installation by a professional is recommended.
Features
- Made in the USA by ARP
Shop more: ARP
Need help choosing parts? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Mitsubishi | Lancer Evolution IV | CN9A | 1996–1997 | 4G63T |
| Mitsubishi | Lancer Evolution V / VI | CP9A | 1998–2000 | 4G63T |
| Mitsubishi | Lancer Evolution VII | CT9A | 2001–2003 | 4G63T |
| Mitsubishi | Lancer Evolution VIII | CT9A | 2003–2005 | 4G63T |
| Mitsubishi | Lancer Evolution IX | CT9A | 2005–2007 | 4G63T |
Technical Specifications
| Spec | Value |
|---|---|
| Brand | ARP |
| Product | L19 Head Stud Kit |
| Engine | 4G63 7-bolt |
| Material | L19 steel |
| Part number(s) | L19-7B |
Contents
1 x ARP head stud kit – studs, nuts and washers for one engine
No instructions available for this product.

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