Hella 003259971 Engine Oil Pressure Switch

Hella Engine Oil Pressure Switch 003259971

The Hella 003259971 engine oil pressure switch is a 12V, 1-pin OE-style switch built for accurate oil pressure monitoring in select Audi applications. It uses a normally open contact design and switches between 0.30 and 0.60 bar, helping the engine control system respond to oil pressure changes as intended.

Built with a green housing and M10x1 thread, this Hella oil pressure switch is a direct-fit service part for many Audi A6, A7, A8, Q7, Q8, RS, S, and SQ models. If you are replacing a faulty oil pressure sender or diagnosing an oil pressure warning, part number 003259971 is a precise reference to verify before ordering.

Key Features

• Hella engine oil pressure switch, part number 003259971
• Normally open contact design
• 12V rated electrical specification
• 1-pin connector layout
• Switch pressure range: 0.30 to 0.60 bar
• M10x1 thread size with 24 mm spanner size
• Green housing color matches the original part

Detailed Description

This Hella oil pressure switch is designed for Audi engines that use a single-connector, normally open pressure switch. It is listed across a wide range of 2013-2025 Audi performance and luxury models, including A6 allroad, A6 Quattro, A7 Sportback, A8 Quattro, Q7, Q8, RS5 Sportback, RS6 Avant, RS7 Sportback, S4, S5, S6, S7 Sportback, S8, SQ5, SQ7, and SQ8. For buyers searching for an Audi oil pressure switch 12V 1-pin normally open contact, Hella 003259971 is the exact part number to compare against the original unit.

This part cross-references VEMO V10-73-0005 for the same application.

What It Is Used For

• Replacing a failed oil pressure switch that triggers warning lights
• Restoring proper oil pressure signal behavior in the engine system
• Addressing intermittent oil pressure warning messages
• Correcting connector or thread mismatch during service replacement
• Servicing Audi engines that require a 0.30-0.60 bar switch point

Installation Notes and Tips

Verify the connector style, thread size, and switch pressure range before installation. This unit uses a 1-pin connector, M10x1 thread, and a 24 mm spanner size, so matching the original specification is important for proper fitment. Confirm vehicle application by model year and engine configuration, especially on Audi A6 Quattro, A7 Sportback, A8 Quattro, Q7, Q8, RS5, RS6 Avant, RS7 Sportback, S6, S7, S8, SQ5, SQ7, and SQ8 listings.

For fitment examples, this part fits 2020-2025 Audi A6 allroad, 2019-2025 Audi A6 Quattro, and 2021-2025 Audi RS6 Avant. It also fits 2018-2025 Audi S4 and 2020-2025 Audi Q7, depending on the exact engine setup shown in the vehicle catalog.

Quality Assurance

Hella is an OE supplier brand, and this engine oil pressure switch is cataloged as genuine OE from Hella for the listed applications. Use the part number 003259971 and the original switch specifications to confirm the correct replacement before installation.