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SKU: BA12700 | UPC: 700424678365
Cobb Subaru 4 Bar MAP Sensor Upgrade Kit for 2002-2021 WRX/STI Models
The Cobb 4 Bar MAP Sensor Upgrade Kit replaces the factory 2.5 bar sensor in turbocharged Subaru models, enabling accurate manifold pressure readings up to 4 bar absolute (43.5 psi boost). It fits 2002-2021 WRX, STI, and select XT variants for reliable tuning on higher boost levels. Drivers gain precise ECU data for safer, more powerful setups with Cobb Accessport.
Key Features
- 4 Bar Pressure Range: Measures up to 58.8 psi absolute pressure for tunes exceeding 25 psi boost without signal clipping.
- Plug-and-Play Design: Direct OEM connector fit with included pigtail harness, no wiring modifications needed.
- Stainless Steel Diaphragm: Resists corrosion and delivers consistent readings in harsh engine bay conditions.
- Ceramic Substrate: Ensures fast response and long-term accuracy for optimal air-fuel ratios.
- Accessport Integration: Full compatibility with Cobb tuning software for seamless boost monitoring and maps.
Product Notes
- Requires ECU tuning (Cobb Accessport recommended) to fully utilize 4 bar range.
- Inspect manifold port for debris before installation to prevent sensor damage.
Installation Notes
- Professional installation recommended.
- Disconnect battery before swapping sensor to avoid ECU faults.
- Bolts directly to intake manifold with OEM hardware torque to 2-3 Nm.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2002-2007 | Subaru | Impreza | WRX |
| 2004-2007 | Subaru | Impreza | WRX STI |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2008-2013 | Subaru | Forester | 2.5 XT |
| 2005-2009 | Subaru | Legacy | 2.5 GT |
| 2015-2021 | Subaru | WRX | All |
| 2015-2021 | Subaru | WRX STI | All |
Why Choose Cobb?
- Decades of Subaru-specific engineering from rally-proven designers.
- Direct integration with Accessport for real-time data logging.
- Made in USA with rigorous testing for track and street reliability.
Frequently Asked Questions
-
Q: Will this fit my 2018 WRX STI?
A: Yes, direct plug-in replacement for all 2015-2021 STI models with factory 3-pin MAP sensor location on intake manifold. -
Q: What material is the sensing element?
A: Stainless steel diaphragm over ceramic substrate for durability and precise pressure transduction up to 4 bar. -
Q: Does installation require tuning?
A: Sensor installs in minutes, but pair with Cobb Accessport protune or off-the-shelf map to scale for 4 bar operation and avoid check engine lights.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Compact retail box, 5" x 4" x 2"
- Weight: 0.2 lbs
COBB
COBB Tuning Performance Parts deliver proven power gains with factory-like drivability backed by an "Engineered Performance" approach trusted by enthusiasts, pro tuners, and performance shops worldwide. Founded in 1999 and now headquartered in Austin, Texas, COBB designs, engineers, tests, and supports its products in-house to ensure reliable results across today's most popular performance platforms. Shop the full lineup of COBB Tuning performance parts at Black Ops Auto Works, including ECU tuning solutions, bolt-on upgrades, and staged power packages built to work together for predictable, repeatable performance. COBB ECU Tuning & Accessport The COBB Accessport is one of the most trusted ECU tuning devices in the industry. It enables safe ECU flashing, live data monitoring, diagnostics (read/clear codes), and tuning management helping drivers unlock stronger throttle response, improved drivability, and dependable horsepower and torque gains when paired with the right supportin...
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