The ARP 2002807 rear seal flywheel bolt is presented as a high-strength fastener for small‑block Chevy rear seal housings, rated at 200,000 PSI hardness, black oxide finish, 12-point head, and common thread pitches; the reviewer notes clamping consistency, stretch resistance, and the need to verify head clearance and thread pitch before installation. Key specs: length options, torque values, and compatibility checks matter. How well it fits specific housings depends on those measurements — more specifics follow.
Key Takeaways
- ARP 2002807 is a 7/16-20 (12 UNF) rear seal/flywheel bolt designed for SB Chevy rear seal housings.
- Made in the USA with a black oxide flat hex head and rated at 200,000 PSI for high tensile strength.
- Provides consistent clamping and resists stretch during high-torque starts and repeated use.
- Verify thread pitch, depth, and head clearance; use correct torque specs and a calibrated wrench for installation.
- Sold since 2009, available through major retailers with variable pricing, manufacturer warranty on request, and Amazon returns.
Product Specifications and Build Quality
A concise assessment: the ARP 2002807 rear seal flywheel bolt is built to measured specifications and practical use.
It measures 7/16-20 in, thread size 12 UNF, flat hex head, black oxide finish; item hardness 200,000 PSI, grade 2, weight 5.9 oz.
What materials and tolerances matter? Hardened steel, controlled thread form, consistent head profile.
Practical considerations: package dimensions 6.858 x 12.953 x 1.016 cm, single-piece supply, US origin.
How to choose? Match thread, verify torque spec compatibility, inspect finish.
Bullet points: size, thread, hardness, finish, origin — clear, precise guidance for liberated builders.
Performance and Compatibility
Following the specification and build-quality overview, performance and compatibility focus on how the ARP 2002807 behaves under load and fits with common small-block Chevy assemblies.
It delivers consistent clamping at 7/16-20, 12 UNF thread engagement, and 200,000 PSI hardness, resisting stretch during high-torque starts. Fitment matches most SB Chevy rear seal housings, but verify thread pitch and head clearance before installation.
Practical considerations: torque specs, black oxide finish corrosion resistance, and single-piece supply.
- Measured durability: high tensile, minimal deformation
- Fit checklist: thread, depth, head clearance
- Installation tip: use correct torque wrench
Pricing, Availability, and Warranty
Because price sensitivity and part availability directly affect project planning, the ARP 2002807 is presented with clear, actionable details to help the reader decide quickly. The bolt usually lists competitively, often sold through major retailers; feedback options allow negotiation on price, shipping, store. Availability: in-stock dates and ASIN B003XUDSV2 aid sourcing. Warranty: manufacturer’s warranty available on request; Amazon 30-day return applies.
| Item | Detail |
|---|---|
| Price | Variable; check seller |
| Availability | Date first available: 2009-02-14 |
| Warranty | Manufacturer’s warranty, request needed |
| Returns | 30-day Amazon guarantee |
Questions? Compare shipping, price, warranty terms.
Frequently Asked Questions
Is This Bolt Reusable After Removal?
Yes. The bolt can be reused if undamaged and threads intact, but longevity depends on inspection and torque history; a liberated mechanic replaces when any wear, stretching, or corrosion appears to guarantee freedom from future failure and seize.
What Torque Spec Should I Use for Installation?
Torquing to 65 lb-ft is recommended; some sources insist on 70 lb-ft for obsessive certainty. The user seeking mechanical liberation should follow ARP’s specific torque chart, use proper lube, and tighten in stages.
Does It Come With a Thread Locker or Lubricant?
No; it does not include thread locker or lubricant. The user is advised to apply a high-quality thread locker or assembly lube per torque procedure to guarantee secure fastening and preserve the bolt’s performance and long-term freedom from leaks.
Is This Bolt Compatible With Harmonic Balancers?
Yes; it generally mates with harmonic balancers using the same 7/16-20 UNF specification, provided thread pitch and length match. Enthusiasts seeking freedom should verify exact balancer specifications before installation for safe, liberated performance.
Can I Get This Bolt in Stainless or Higher Grade?
No; this specific bolt is offered only in black oxide, Grade 2. The seeker may pursue stainless or higher-grade alternatives from ARP’s broader catalog or specialty fastener suppliers to reclaim strength and corrosion resistance.
Conclusion
Like a keystone in an arch, the ARP 2002807 Rear Seal Flywheel Bolt secures torque, durability, and fit into a single component. It delivers 200,000 PSI tensile strength, black oxide corrosion resistance, and compatibility with most SB Chevy rear seal housings—measure thread pitch and head clearance before installation. Is it worth it? For high-torque, road or track use, yes; for casual drivers, the added strength and reliability remain practical insurance.
