Bull Boost
Bull Boost Cylinder Head Stud Kit for Subaru Impreza WRX STi EJ20 EJ25 DOHC 260-4701
Bull Boost Cylinder Head Stud Kit for Subaru Impreza WRX STi EJ20 EJ25 DOHC 260-4701
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$54.95 USD
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$54.95 USD
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- Free fitment check before you order
Listed for: Subaru Impreza WRX STi EJ20 EJ25 DOHC 260-4701Fitment notes & questions
Cylinder Head Stud Kit from Bull Boost, listed for Subaru. Fresh bolts are cheap insurance on any job that takes the cylinder head off.
Quick facts
- Brand: Bull Boost
- Part type: Head bolt set
- Listed for: Subaru
Specifications
- Reference part number: 260‑4701
- Material: 35CrMo
- Quenching: Grade 12.9
- Tensile strength: 1200Mpa about 174000PSI
- Finish: Blackening
Listed fitment
- All Subaru SUBARU IMPREZA WRX & STI TURBO EJ20 2.0L and EJ25 2.5L DOHC Turbo Engines.
Tip: Clean the threads in the block, follow the torque sequence and angle steps for your engine, and do not reuse stretch bolts.

Bull Boost head bolt set for the Subaru Impreza WRX STi EJ20 EJ25 DOHC: what to know
Many modern engines use torque-to-yield head bolts that stretch when tightened, so they should not be reused.
Fitment notes
- Listed for: Subaru Impreza WRX STi EJ20 EJ25 DOHC 260-4701.
- Model years: 260-4701. Parts can change mid-generation, so match the exact year.
- Specs, lead time and warranty come from Bull Boost and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Head gasket. Bolts and gasket go on together.
- Thread chaser. Clean block threads give accurate torque.
More for your car: Subaru Parts · Engine
Questions about Subaru Impreza WRX STi EJ20 EJ25 DOHC head bolt set
Will this fit my Subaru Impreza WRX STi EJ20 EJ25 DOHC?
It is listed for the Subaru Impreza WRX STi EJ20 EJ25 DOHC 260-4701. Check your year, model, engine and trim against the title and details above. If anything is different, contact us and we will confirm fitment before you order.
Can I reuse my old head bolts?
Not if your engine uses torque-to-yield bolts. Check the service manual; when in doubt, use new ones.
Where do specs and warranty details come from?
From Bull Boost. Each brand sets its own specs, lead times and warranty terms, and they can change. The product details above are the latest we have.
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