SUBARU 31878AA020 Oil Pressure Sensor

( Part Type: Oil Pressure Sensor ), ( Manufacturer Part Number: 31878AA020 ), ( Vintage Part: No )

Review SUBARU Oem Oil Pressure Sensor Pt# fits PT

The Subaru 31878AA020 Oil Pressure Sensor is an essential component of your Subaru vehicle's engine system. This sensor is designed to monitor the oil pressure in the engine and transmit that information to the vehicle's dashboard and engine control unit. These readings help ensure that the engine is operating at optimal conditions, providing essential data for the vehicle's warning systems.

The Subaru 31878AA020 Oil Pressure Sensor is a high-precision component, featuring a robust and durable design. The sensor's housing is made from a heat-resistant material, allowing it to withstand the high temperatures and harsh conditions found within an engine compartment. The sensor element itself is protected by a thick, resilient diaphragm, which ensures accurate and reliable pressure readings even under heavy load conditions.

The sensor utilizes a variable resistance technology, which allows it to transmit its oil pressure readings to the engine control unit via a voltage signal. This voltage signal is directly related to the oil pressure within the engine, enabling the vehicle's systems to respond accordingly to any changes in oil pressure levels.

Installation of the Subaru 31878AA020 Oil Pressure Sensor is a relatively straightforward process, typically requiring only basic hand tools and a few simple steps. The sensor is designed to replace the failed or faulty sensor in your Subaru vehicle, and will provide reliable and accurate oil pressure readings once installed.

In the event that the sensor fails or malfunctions, it may cause a variety of symptoms, including warning lights on the dashboard, rough engine operation, or even engine damage if left unaddressed. Replacing the sensor with a new, high-quality component like the Subaru 31878AA020 Oil Pressure Sensor can help prevent these issues and ensure that your vehicle continues to operate safely and efficiently.

In summary, the Subaru 31878AA020 Oil Pressure Sensor is a crucial component of your Subaru vehicle's engine system. Its durable design, precise pressure sensing capabilities, and straightforward installation process make it an essential upgrade for any Subaru owner seeking to maintain the health and performance of their vehicle.

1. Ensures Proper Engine Functioning: A faulty oil pressure sensor can lead to engine damage or even failure. Replacing it with an OEM part ensures that the engine is receiving accurate oil pressure readings, maintaining optimal performance and longevity.

2. Improved Fuel Efficiency: A properly functioning oil pressure sensor contributes to improved fuel efficiency. The sensor monitors oil pressure, which is crucial for engine lubrication and cooling. Proper lubrication and cooling lead to reduced engine friction, ultimately improving fuel efficiency.

3. Reliable and Durable: Subaru OEM parts, including the oil pressure sensor, are designed to meet specific engineering requirements. This ensures a reliable and durable solution for your vehicle, as compared to aftermarket parts which may vary in quality and performance.

4. Reduced Maintenance Costs: While the upfront cost of an OEM oil pressure sensor may be higher than aftermarket alternatives, the long-term benefits, such as improved reliability and durability, can lead to reduced maintenance costs.

1. Higher Upfront Cost: The cost of an OEM oil pressure sensor is generally higher than aftermarket alternatives. This may deter some buyers who are looking for a more budget-friendly solution.

2. Potential Wait Time for Replacement: Depending on your location and the availability of Subaru dealerships, you may experience a longer wait time for an OEM oil pressure sensor replacement as compared to aftermarket parts.

Replacing a faulty oil pressure sensor with a Subaru OEM (31878AA020) part is an investment in the long-term performance and reliability of your vehicle. While the upfront cost may be higher than aftermarket alternatives, the advantages, such as improved engine function, fuel efficiency, and reliability, make it a worthwhile choice for Subaru owners.

If you are a Subaru owner and your vehicle requires an oil pressure sensor replacement, it's highly recommended to opt for a Subaru OEM (31878AA020) part. This will ensure proper engine function, improved fuel efficiency, and long-term reliability for your vehicle. Although the upfront cost may be higher, the benefits outweigh the potential savings from aftermarket parts.

Details:

Subaru Legacy. Subaru Ascent. Used OEM Subaru Oil Pressure Sensor. Subaru Impress.

Subaru Outback. Subaru Forester. Genuine Subaru Part Number: 31878AA020. Subaru Cross trek.

part #: 31878aa020 prices

• $20.88-$24.98

specifications pumppruner:

• for models: Pt
• for makes: Subaru
• part type: Oil Pressure Sensor
• manufacturer part number: 31878AA020
• vintage part: No

general pumppruner:

• Car Truck Parts Accessories > Engines Engine Parts > Oil Pumps Parts
• condition: Used

offer pumppruner:

• started: October 21, 2025
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• sold: 0

shipping pumppruner:

• transit: 3-8 Days
• class: Standard
• type: Calculated
• carrier: USPS
• service: USPS Ground Advantage
• cost: $0.00

returns pumppruner:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

seller pumppruner:

• # reviews: 202
• rating: 97.2%
• city: Norfolk, Virginia

payments pumppruner:

• other
• credit card: Mastercard
• wallet: Paypal

Subaru 31878AA020 Is Similar To:

• Subaru 15010aa370 Engine Oil Pump From 2017 Outback 3.6 Ez36 (45.7% similar) Please replace such items as required for proper installation...(June 6th, 2024)
• Killer B 675505484893 Motorsport Super G High Performance Oil Pan For Subaru Ej Series (16.8% similar) Rear breather relocation tube prevents oil from exiting the crankcase port during extreme acceleration. Our super high performance oil pan is designed for high g-force track compatible with: with a unique baffling system oil drained easily into the and held close to pickup. Works best with...(June 6th, 2024)
• Brakemotorparts Bra113449oke Oil Pump For Subaru 2.0l 2.5l High Performance R 12mm Ej20t Ej22e Ej25t Ej255 (19.9% similar) This item includes. 1 oil pump, 7 screw bolts, o-ring, pump seal. Your best choice of motor parts. Note: please refer to the listing pictures for an accurate of parts included in kit. New list item...(June 10th, 2024)
• A-premium 15010aa091 Engine Oil Pump For Subaru Forester 2003-2006 Impreza Legacy Outback Baja 2.5l (19.4% similar) Part #: a-premium 15010AA091 for sale...(June 11th, 2024)
• Acl Opsb1478hp New Oil Pump For Subaru Wrx Sti Ej20 Ej22 Ej25 Ej257 Ej207 (22% similar) Bought this for a project and didn't end up using it. See pics for packaging and condition. New ACLU oil pump for subaru Rx sit EJ20 EJ22 EJ25 EJ257 EJ207 OPSB1478HP...(June 12th, 2024)
• Subaru 15049aa150 2017-2025 Impreza Engine Motor Oil Pick Up Tube Pipe Oem Wt11 (38.7% similar) Please be 100% sure this is the correct part for your vehicle. Unless stated otherwise it may be a little dusty from storage use. For sale is an used oem part original equipment manufacturer that came stock with your car, it not aftermarket...(June 13th, 2024)
• Subaru 15050aa150 Engine Oil Pickup Tube From 2012 Impreza 2.0 (44.9% similar) Please replace such items as required for proper installation...(June 19th, 2024)
• Subaru 15010aa320 Engine Oil Pump From 2013 Forester 2.5 Turbo (48.6% similar) Please replace such items as required for proper installation...(June 21st, 2024)
• Subaru 15010aa300 Engine Oil Pump From 2006 Legacy 2.5 (48.5% similar) Please replace such items as required for proper installation...(June 23rd, 2024)
• Killer B 675505442121 Performance Oil Pan And Pickup Baffle For Subaru Ej Series (17.6% similar) This is a used oil pan combo in working order. Stock # SO2010. Refer to photos for more details. Please see the photos for details...(July 10th, 2024)
• Cns Op97312 Engine Oil Pump Kit For 13-20 Fr-s Toyota 86 Subaru Brz 2.0l Fa20 4u-gse Zc6 Zn6 (21.9% similar) Oem oil pump pulled off of the a BR timing cover. Was only on the vehicle for may be about 500 miles. The timing cover was new, unfortunately I got a crack in it so couldn use anymore. But the oil pump is in good condition...(July 31st, 2024)