A Guide to the Transmission Filter Kit for the 2014-2017 Volvo VNX
Keep your heavy-haul VNX shifting smoothly by understanding its transmission filter needs.
- The 2014-2017 Volvo VNX primarily uses the I-Shift transmission, which requires a specific filter kit.
- Symptoms of a bad filter include harsh shifting, whining noises, and gear slippage.
- A quality aftermarket brand like Wix is a reliable alternative to the more expensive OEM part.
- Due to the high cost of the I-Shift transmission, do not use cheap, unbranded filters.
Signs of a Clogged Transmission Filter in Your VNX
The complex I-Shift transmission in your VNX relies on clean fluid to work correctly. When the filter gets clogged, it can starve the transmission of fluid, leading to serious problems. You might notice the truck struggling to shift, or the shifts may become harsh and jerky. In some cases, the transmission may delay engaging when you shift from neutral to drive. A whining noise that changes with engine RPM is a classic sign of a clogged filter causing the transmission pump to work too hard. If you ignore these signs, you risk the transmission overheating or slipping out of gear.
Critical Warning: Do Not Ignore Shifting Problems
If your truck starts showing severe symptoms like refusing to shift, getting stuck in gear, or going into "limp mode," it's a sign that damage may be occurring. Continuing to drive could lead to a complete transmission failure, which is one of the most expensive repairs on a heavy-duty truck.
Choosing the Right Aftermarket Filter Kit
When it's time to service your transmission, you have a choice between Original Equipment Manufacturer (OEM) and aftermarket parts. For a critical component like a transmission filter, quality is key.
- OEM Filters: These are the same parts Volvo installed at the factory. They are guaranteed to fit and perform to Volvo's exact standards. The main drawback is usually a higher cost.
- Premium Aftermarket (e.g., Wix): Reputable aftermarket brands like Wix design their filters to meet or exceed OEM specifications. Wix is a well-known manufacturer of heavy-duty filters and is owned by MANN+HUMMEL, a global leader in filtration. Their products for heavy-duty transmissions use advanced filter materials and are built to withstand harsh conditions, making them a reliable alternative to OEM.
- Budget Aftermarket: Cheaper, unbranded filters are a gamble. They may use lower-quality filter material, and their included gaskets or seals can be prone to leaking. For an expensive and vital component like your VNX's transmission, saving a few dollars on a budget filter is not worth the risk.
Pro Tip: Check the Whole Kit
A transmission filter "kit" should include more than just the filter. For the I-Shift transmission, it must come with the correct O-rings for the filter housing. Always make sure these seals are replaced with the filter to prevent leaks.
Cost of Replacing a Volvo VNX Transmission Filter Kit
| Part Type | Estimated Part Cost | Estimated Labor Cost |
|---|---|---|
| New Aftermarket (Wix) | $12.56 - $132.96 | $100 - $200 |
| New OEM | $40 - $150 |
Note: Costs are estimates and can vary based on your location and the specific service shop.
Frequently Asked Questions
How often should I change the transmission filter on my VNX?
Volvo recommends a long service interval for the I-Shift transmission, often around 500,000 miles for on-highway use. However, because the VNX is used for heavy-haul applications, more frequent service may be beneficial, especially if the truck operates in severe conditions. Always consult your owner's manual or a trusted mechanic for the best interval for your specific use case.
Is this a DIY job?
For a mechanic or an experienced owner, changing the I-Shift filter is manageable. It involves draining the fluid, removing a plastic filter housing with a large 1.5-inch socket, replacing the filter and O-rings, and refilling with the correct fluid. However, the plastic housing can be broken if over-tightened, and using the wrong fluid can destroy the transmission. If you are not confident, it is best to leave this job to a professional.
Are there any recalls for the 2014-2017 VNX transmission?
Searches of the NHTSA database did not show any specific recalls for the transmission filter or widespread transmission issues for the 2014-2017 Volvo VNX model years. Most related recalls affect different model years or vehicle systems.
Should I use an OEM filter or is Wix okay for my VNX?
Wix is a reputable brand that produces quality filters for heavy-duty trucks. For most owners, a Wix filter kit will provide excellent protection and performance that is comparable to OEM. The most important thing is to avoid cheap, no-name brands and to ensure the service is done correctly with the proper fluid.
Technical Specifications
OEM Part Numbers: 20779040 24283117
Kit typically includes a cartridge-style filter and O-rings for the filter housing. Designed for the Volvo I-Shift automated manual transmission.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Volvo VNX: