Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)-COBB-COBBB42405-SL
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Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)

COBB
COBBB42405-SL
700424678716
Intercooler Kits
17 Units In Stock - Ships Next Business Day
$ 985.00
$ 985.00

SKU: BB42405-SL   |   UPC: 700424678716

Cobb 2015-2021 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)

The COBB Top Mount Intercooler serves as a direct replacement for the factory unit on 2015-2021 Subaru WRX models. Its oversized bar-and-plate core delivers increased cooling capacity to maintain lower intake air temperatures during extended runs. This upgrade supports higher boost levels while fitting under the stock hood with no modifications.

Key Features

  • Bar-and-Plate Core: 21.5" x 12.25" x 3.0" dimensions provide 546% more volume than stock for rapid heat rejection and stable IATs.
  • End Tanks: Cast 6061-T6 aluminum construction handles high pressures and resists cracking under boost.
  • Direct Fit Design: Bolts into factory locations using OEM shroud and ducting for simple swap.
  • Silver Powder Coat: Durable finish protects against corrosion and heat while matching engine bay components.
  • USA Made: Built with precision welding and quality materials for long-term durability.

Product Notes

  • Requires COBB SF Charge Pipe Kit (part 47505B or similar) due to larger core thickness.
  • Retains all factory air routing and sensors for plug-and-play operation.
  • Ships ready-to-install with included hardware; weight 19 lbs.

Installation Notes

  • Professional installation recommended.
  • Remove OEM intercooler and charge pipe; install COBB charge pipe first.
  • Use provided gaskets; torque fittings to 20-25 ft-lbs per COBB guidelines.

This Part Fits

Year Make Model Submodel
2015-2021 Subaru WRX Base/Premium/Limited
2015 Subaru WRX Base
2015 Subaru WRX Limited
2015 Subaru WRX Premium
2016-2021 Subaru WRX All

Why Choose COBB?

  • Decades of Subaru-specific engineering experience.
  • Rigorously dyno-tested for real-world performance gains.
  • Full integration with COBB Accessport and tuning ecosystem.

Frequently Asked Questions

  • Q: Will this fit my 2015-2021 Subaru WRX?
    A: Yes, it bolts directly to all 2015-2021 WRX models (VA chassis) using factory mounts; not compatible with STI.
  • Q: What materials are used in construction?
    A: High-grade bar-and-plate core with cast 6061-T6 aluminum end tanks and TIG-welded assembly.
  • Q: What is the warranty and install process?
    A: Backed by COBB's 12-month warranty; bolt-on install takes 1-2 hours with basic tools and COBB charge pipe.

Shipping & Handling

  • Method: UPS Ground or FedEx Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Securely boxed at 24" x 15" x 7"
  • Weight: 19 lbs

Request For Information

Have questions about Cobb 15-18 Subaru WRX Top Mount Intercooler - Silver (Requires COBB Charge Pipe)? Fill out the form below and we'll get back to you by the next business day.
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