A Comprehensive Guide to the 2010-2018 Volvo VNL Transmission Filter Kit
Keep your VNL's I-Shift or manual transmission protected by understanding its most critical maintenance part.
- Always change the transmission filter when you change the fluid; they work as a team.
- Using the correct Volvo-approved synthetic fluid is critical and non-negotiable for I-Shift transmissions.
- A quality aftermarket filter from a brand like Wix is a reliable and cost-effective choice for this part.
- Symptoms like harsh shifting, slipping, or whining should be addressed immediately to prevent catastrophic transmission failure.
Symptoms of a Clogged or Failing Transmission Filter
A dirty transmission filter restricts fluid flow, which can starve the transmission of the lubrication it needs. Before it fails completely, you'll likely notice some warning signs. Ignoring them can lead to expensive transmission damage.
🎬 Watch: What happens when an I-Shift transmission fails.Key Failure Symptoms:
- Rough or Jerky Shifting: The truck may lurch or shift harshly between gears because of inconsistent fluid pressure.
- Delayed Engagement: You might notice a long pause when shifting from Park into Drive or Reverse before the truck starts to move.
- Slipping Gears: The transmission may unexpectedly slip out of gear while driving, causing a sudden loss of power.
- Whining or Grinding Noises: Unusual noises from the transmission area, especially during shifts, can indicate fluid starvation or internal wear.
- Overheating: A clogged filter can contribute to the transmission running hotter than normal, which can trigger warning lights and cause a burning smell.
Choosing the Right Aftermarket Filter Kit
When shopping for a new transmission filter kit for your Volvo VNL, you have two main choices: OEM (Original Equipment Manufacturer) from a dealer, or an aftermarket brand. For a part like a transmission filter, a high-quality aftermarket kit can offer the same performance for less money.
OEM vs. Aftermarket Quality:
Volvo's OEM filters are built to a high standard, often featuring robust casings and a large amount of filter paper. However, reputable aftermarket brands like Wix also produce high-quality filters specifically for heavy-duty applications. These filters are designed to meet or exceed the original specifications, providing excellent filtration and protection. Forum discussions among mechanics and truck owners often confirm that Wix is a trusted and reliable choice for heavy-duty trucks. Given the long service intervals, saving money on the filter itself without sacrificing quality makes sense, especially since the specialized transmission fluid is the most expensive part of the job.
Pro Tip: The transmission filter for the I-Shift is a cartridge-style filter located in a plastic housing. This housing can become brittle with age and heat. Be careful not to overtighten or damage it during replacement. Always replace the O-ring that comes with the new filter kit to ensure a proper seal.
🎬 See how to change the oil and filter on this unit.Known Issues, Recalls, and Service Bulletins
While there have been no specific recalls for the transmission filter itself on the 2010-2018 Volvo VNL, several transmission-related recalls and service bulletins are worth noting:
- Clutch Recall (RVXX1901): Some 2018-2019 VNLs were recalled for a clutch component failure that could cause unintended movement.
- Transmission Fuse Recall (RVXX1903): A small number of 2018-2020 models had an issue where a fuse in the transmission circuit could blow, preventing shifting.
- TSB FSB 431-001: This bulletin addresses potential diagnostic trouble codes (DTCs) that can appear after replacing I-Shift components due to a mismatch between older and newer generation parts like the control unit and speed sensors.
These issues highlight the complexity of the VNL's transmission system and the importance of proper maintenance, including regular filter changes.
Cost Comparison for Transmission Filter Replacement
The cost of replacing a transmission filter kit can vary widely. The filter itself is relatively inexpensive, but the required synthetic fluid and labor make up the bulk of the cost.
| Part/Service | Estimated Cost |
|---|---|
| New OEM Filter Kit | $45 - $75 |
| New Aftermarket Filter Kit (Wix) | $12.56 - $132.96 |
| Shop Labor (Filter & Fluid Change) | $200 - $500+ |
| Required Fluid (4-5 Gallons) | $400 - $600+ |
Frequently Asked Questions (FAQ)
How often should I change the transmission filter on my Volvo VNL?
The interval depends on your truck's application. For normal on-highway use with approved synthetic fluid, Volvo's recommended interval can be up to 250,000 miles or even 500,000 miles for later models. For severe service, the interval is shorter. Always change the filter whenever you change the transmission fluid. Check your specific operator's manual for the correct schedule.
Can I replace the transmission filter myself?
Yes, if you have the right tools and are comfortable working on your truck. The job requires a large socket (1 1/2 inch) for the filter housing, a large drain pan (at least 5 gallons), and a way to pump the new fluid back into the transmission. The plastic filter housing requires care to avoid damage. If you are unsure, it's best to have a qualified mechanic perform the service.
🎬 Watch: A complete walkthrough of the I-Shift transmission service process.What kind of fluid do I need for my VNL's I-Shift transmission?
You must use an approved synthetic transmission oil. For 2015 and later I-Shift transmissions, Volvo specifies a 75W-90 fluid (like Volvo 97319). Using the wrong fluid can cause damage and void your warranty. This fluid is expensive but essential for the long service intervals and protection of the transmission.
Is an aftermarket filter really good enough for my work truck?
Yes, a high-quality aftermarket filter from a brand like Wix is a reliable choice. These filters are engineered for heavy-duty environments and provide the filtration needed to protect your transmission. For a routine maintenance part, they offer excellent value without compromising on performance.
Helpful Videos
Technical Specifications
OEM Part Numbers: 20779040
Fits Volvo I-Shift and manual transmissions. Kit typically includes a cartridge-style filter and a new O-ring for the housing.
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 VNL: