SKU: B515132-HW | UPC: 700424678556
Cobb 15-20 Subaru STI SS 3in Cat-Back Exhaust Hardware Kit
Complete your COBB 3-inch stainless steel cat-back exhaust installation on 2015-2020 Subaru WRX STI with this dedicated hardware kit. It supplies all essential stainless steel components including V-band clamps, bolts, nuts, and hangers for a leak-free, vibration-resistant setup. This kit ensures proper alignment and secure mounting to factory locations, delivering reliable performance gains from deeper exhaust tone to improved flow.
Key Features
- Stainless Steel V-Band Clamps: Provides airtight seals at turbo outlet and mid-pipe connections, preventing exhaust leaks and maintaining backpressure efficiency.
- Precision Bolts and Nuts (Grade 8): Matches OEM thread specs with corrosion-resistant 304 stainless construction for repeated torquing without stripping.
- Rubber-Coated Hangers (x4): Absorbs road vibrations, reduces noise, and secures exhaust sections in stock positions for direct bolt-on fit.
- Complete Fastener Set: Includes all M8/M10 bolts, lock washers, and flange nuts requiredno additional parts needed for full assembly.
- USA-Made Quality: Engineered by COBB for exact tolerances on STI cat-back (PN 515132), supporting 400+ whp builds.
Product Notes
- Designed exclusively for COBB 3″ SS Cat-Back Exhaust PN 515132 on 2015-2020 STI.
- Inspect hardware for damage upon receipt store in dry conditions to preserve finish.
Installation Notes
- Professional installation recommended.
- Torque V-band clamps to 8-10 ft-lbs use anti-seize on bolts for easy future removal.
- Compatible with factory cat-back mounts and aftermarket mid-pipes using standard V-band flanges.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2020 | Subaru | WRX STI | Sedan |
Why Choose Cobb?
- Decades of Subaru-specific R&D with dyno-proven results.
- 304 stainless hardware withstands heat cycles and road salt.
- Direct-fit design from Accessport creators for seamless integration.
Frequently Asked Questions
- Q: Will this hardware kit work with 2015-2020 Subaru WRX STI cat-back?
A: Yes, it fits all USDM 2015-2020 WRX STI Sedan models equipped with COBB 3″ SS Cat-Back Exhaust PN 515132 confirms to factory hanger and flange locations. - Q: What materials are used in this kit?
A: Full 304 stainless steel clamps, bolts, nuts, plus rubberized hangers for durability against exhaust heat up to 1600F and corrosion. - Q: What is the warranty and install time?
A: Backed by COBB’s limited lifetime warranty basic install takes 30-60 minutes with basic tools for experienced mechanics.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock – ships same or next business day
- Packaging: Secure foam-lined box, 12in x 8in x 4in
- Weight: 2.2 lbs
