Click to zoom in
SKU: 251-2803 | UPC: 672036038014
ARP Flywheel Bolt Kit for 1985-1996 Ford Cosworth YB
ARP Flywheel Bolt Kit 251-2803 secures flywheels and flexplates in Ford Cosworth YB engines found in Sierra Cosworth and Escort RS Cosworth models from 1985 to 1996. These bolts deliver 180,000 PSI tensile strength from heat-treated 8740 chromoly steel construction for dependable power transfer in street and track use. The kit includes six M12x1.25 bolts at 2.220 inches overall length with matching hardened washers.
Key Features
- 180,000 PSI Tensile Strength: Handles extreme torque loads in high-performance Cosworth YB applications without failure
- 8740 Chromoly Steel: Aerospace-grade alloy forged and heat-treated before thread rolling for maximum fatigue resistance
- Black Oxide Finish: Provides corrosion resistance and reduces friction during installation
- 12-Point Flat Head Design: Ensures positive engagement and easier access in tight engine bays
- Larger Shank Diameter: Improves flywheel registration and strength over stock hardware
Product Notes
- Designed as direct replacement for OEM flywheel bolts in Cosworth YB engines
- Use ARP Ultra-Torque lubricant for accurate torque values
- Ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Torque to 85 ft-lbs using ARP specifications and proper thread cleaner
- Compatible with stock and aftermarket flywheels on YB crank flange
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1985-1986 | Ford | Sierra | Cosworth |
| 1987-1990 | Ford | Sierra | Sapphire Cosworth |
| 1992-1996 | Ford | Escort | RS Cosworth |
Why Choose ARP?
- Trusted by NASCAR and motorsports teams for critical fasteners
- Engineered in USA with precise machining tolerances
- Backed by limited lifetime warranty against manufacturing defects
Frequently Asked Questions
-
Q: Does this kit fit all Ford Cosworth YB engines?
A: Yes it fits 1985-1996 Sierra Cosworth, Sapphire Cosworth, and Escort RS Cosworth with 2.0L or 2.1L YB turbo engines including swaps -
Q: What is the material and finish used?
A: Forged 8740 chrome moly steel with black oxide finish for strength and rust protection -
Q: What is the warranty and installation process?
A: Limited lifetime warranty. clean threads, apply ARP lube, torque to 85 ft-lbs in sequence for best results
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact protective box 4 x 3 x 1 inches
- Weight: 0.31 lbs
ARP Head Studs
ARP head stud kits for internal engine builds are stocked at Black Ops Auto Works. Shop ARP head stud and bolt kits, main stud kits, and rod bolt kits engineered for HEMI, Ford Modular and Coyote, GM LS, Subaru EJ, Honda K and B series, VW/Audi turbo four cylinders, Porsche, BMC, and Renault engines, along with the Ultra-Torque assembly lubricant every kit depends on. Every product is filterable by year, make, model, and engine platform so the correct fastener kit ships the first time. Black Ops Auto Works carries 812 ARP Head Studs SKUs across 8740 chromoly and ARP2000 alloy options. What This Collection Covers ARP head studs replace factory head bolts with precision-machined threaded studs that thread into the block and allow the nut to be torqued concentrically on a stationary fastener, producing more even and repeatable clamping force across the entire head gasket surface than a factory head bolt design. This collection focuses on the internal engine fasteners that hold the ...
View ARP Head Studs Products
Hardware
Engine hardware, fasteners, and mounting hardware kits for builds, fabrication, and suspension work are stocked at Black Ops Auto Works. Shop ARP engine bolts and stud kits, suspension mounting hardware from Fox and Rock Krawler, bumper mount kits, tie rod clamps, joint retainer tools, and single and kit-packaged hardware for domestic, import, and off-road platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 945 Hardware SKUs across engine hardware, suspension mounting hardware, and single-piece or kit-packaged fasteners. What This Collection Covers Hardware groups together the fasteners, mounting kits, clamps, and small components that hold engines, suspension systems, and accessories together. This includes ARP engine hardware such as intake manifold bolts and cam bolt kits, suspension mounting hardware from Fox and Rock Krawler for shock and steering stabilizer installs...
View Hardware Products
Hardware Kits - Other
Hardware kits and fastener assortments for engine builds, suspension installs, body and trim jobs, and off road rigs are stocked at Black Ops Auto Works. Shop ARP bolt and stud kits, brake caliper hardware, suspension bushing hardware, leaf spring hardware kits, security fastener kits, and general clip and retainer assortments across domestic and import platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 593 Hardware Kits - Other SKUs across engine, suspension, body, and lighting hardware categories. What This Category Covers The Hardware Kits - Other category groups together fastener kits and hardware assortments that do not fall under a single dedicated part category. Coverage spans engine fastener kits like cam bolts and intake manifold bolts, suspension hardware including bushing pivot washers and leaf spring hardware, seat belt mounting hardware, security hardware fo...
View Hardware Kits - Other Products