Womala Intake Runner O Ring 31331885 Intake Manifold Seal for Volvo V50 S40
The Intake Runner O Ring (Intake Manifold Seal, OE Number: 31331885) is a crucial sealing component for Volvo vehicles' intake systems. Installed between the intake runner (part of the intake manifold) and the cylinder head, it plays a vital role in maintaining the integrity of the air - fuel mixture delivery process. As an OE - grade part, it ensures a precise fit and reliable sealing performance.
Constructed from high - quality rubber or elastomeric materials, this O ring is designed to withstand the high temperatures and pressures within the intake system, as well as resist the corrosive effects of air - fuel mixtures. It adheres to Volvo's strict manufacturing standards, ensuring consistent quality and durability.
Core Functions
- Sealing: The primary function of the intake runner O ring is to create a tight seal between the intake runner and the cylinder head. This prevents any leakage of the air - fuel mixture, ensuring that the correct amount of fuel and air reaches the combustion chamber for efficient combustion. Leakage can lead to a lean air - fuel ratio, resulting in reduced engine power, poor fuel economy, and potential engine misfires.
- Pressure Maintenance: By providing an effective seal, the O ring helps maintain the proper pressure within the intake system. This is essential for the proper operation of components such as fuel injectors, which rely on a consistent intake pressure to deliver the correct amount of fuel.
- Preventing Contamination: It also prevents the entry of contaminants such as dust, dirt, and debris into the intake system. Contamination can damage internal engine components and disrupt the combustion process, leading to decreased engine performance and increased wear.
Compatible Vehicles
This Intake Runner O Ring (OE: 31331885) is suitable for the following Volvo models and their respective year ranges:
| Model | Applicable Year Range |
| Volvo V50 | 2004 - 2012 |
| Volvo S40 (04 -) | 2004 - 2012 |
| Volvo V40 CROSS COUNTRY | 2013 - 2015 |
| Volvo S60 CROSS COUNTRY | 2016 |
| Volvo C70 (06 -) | 2006 - 2013 |
| Volvo C30 | 2007 - 2013 |
| Volvo V60 (-18) | 2013 - 2016 |
| Volvo S60 (11 - 18) | 2011 - 2016 |
| Volvo S80 (07 -) / S80L | 2007 - 2015 |
| Volvo V70 (08 -) | 2008 - 2015 |
| Volvo XC60 (-17) | 2015 - 2016 |
| Volvo XC70 (08 -) | 2016 |
Notes:
- Intake runner O rings can be engine - specific, even within the same model range. It is crucial to verify compatibility with your vehicle's engine type (e.g., 4 - cylinder, 5 - cylinder) using the Vehicle Identification Number (VIN) or by referring to Volvo's official service manual.
- When replacing the O ring, it is important to handle it carefully to avoid any damage, as even minor tears or deformations can compromise its sealing effectiveness.

Frequently Asked Questions
Q: How to determine if the bumper bracket needs replacement?
A: Signs of a failing bumper bracket include visible damage or deformation, misaligned bumper panels, unusual noises from the front end, or if the bumper appears loose or sagging on one side.
Q: What should be paid attention to when replacing the bumper bracket?
A: For optimal results, we recommend professional installation. Key considerations include ensuring proper alignment of all mounting points, checking for additional damaged components, and verifying all fasteners are properly torqued to specification.
Why Choose Our Products
- Extensive Industry Experience: 13 years specializing in Volvo auto parts with precise product matching and technical solutions.
- Quality Assurance: 10-stage quality inspection process including durability testing, surface roughness analysis, and dimensional verification.
- Manufacturing Excellence: 15,000㎡ production base with 10,000+ SKUs in inventory for fast order fulfillment.
- Strategic Partnerships: Collaborations with 50+ factories including suppliers to international brands like Bosch and Hella.

