SKU: B315650 | UPC: 700424674527
COBB Fuel Pressure Sensor Kit – 2008-2021 Subaru WRX STI (incl. 2018 Type RA)
The COBB 315650 delivers plug-and-play fuel pressure monitoring for 2008-2021 Subaru WRX STI models, including the 2018 Type RA and 2021 Final Edition. This kit adds a 0-150 psi sensor to your COBB Accessport for live data display, logging, and safety cutoffs in custom tunes—perfect for E85, flex fuel setups, large injectors, or upgraded pumps. No cutting or splicing required on factory harnesses.
Key Features
- Real-Time 0–150 psi Monitoring: View live fuel pressure on Accessport gauges and log data for precise tuning diagnostics.
- 100% Plug-and-Play: Direct connector to Accessport harness with no modifications to factory wiring.
- Direct Fit on COBB Fuel Rails: Threads into 1/8″ NPT port on COBB top-feed rails (315400/315500).
- Fuel Pressure Safety: Integrates with custom maps for lean condition protection and cut features.
- Made in USA: Lifetime warranty against defects with COBB engineering standards.
Product Notes
- Requires COBB Accessport V3 and COBB Top-Feed Fuel Rails (315400 for 2008-2014, 315500 for 2015-2021).
- Compatible with all EJ257 STI engines, including Bosch 1800cc injectors on 2015+ models.
- Ships in official COBB retail box, 4″ x 4″ x 2″ dimensions.
Installation Notes
- Professional installation recommended.
- 15-minute install: Screw sensor into COBB rail 1/8″ NPT port using included -6 AN adapter, plug into Accessport harness.
- Accessport auto-detects sensor post-install; full instructions and O-ring seals included.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2021 | Subaru | Impreza WRX STI | All (incl. 2018 Type RA, 2021 Final Edition) |
Why Choose COBB Tuning?
- #1 selling solution for Subaru STI fuel monitoring over 15 years.
- Engineered and manufactured in the USA for EJ257 reliability.
- Proven on 600-1000+ hp builds worldwide with Accessport integration.
Frequently Asked Questions
- Q: Does this fit my 2018 Type RA STI?
A: Yes, direct fit for all 2008-2021 WRX STI models including Type RA and Final Edition without modifications. - Q: What fuel rails are required?
A: COBB Top-Feed Fuel Rails only (315400 for 08-14, 315500 for 15-21) with 1/8″ NPT port. - Q: How do I access fuel pressure data?
A: Accessport V3 displays live 0-150 psi on gauges, logs data, and supports custom map safety features.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Official COBB retail box (4x4x2 inches)
- Weight: 0.45 lbs
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