

WIX 57521 Oil Filter Replacement | Synthetic & High-Mileage Oil Compatible
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Free Returns
Description
xDesigned for demanding conditions
The WIX 57521 oil filter replacement is built to protect engines when driving tasks push components to their limits. Its synthetic-blended filtration media captures a high share of contaminants, helping sustain engine performance, while a silicone anti-drainback valve keeps oil in the filter during engine shutdowns for smoother starts.
Compatibility with synthetic and high-mileage oils
Engineered for synthetic blends and high-mileage formulations, this filter supports robust lubrication across a range of driving styles. Its high-capacity design aims to extend service intervals while maintaining reliable filtration performance under pressure.
- Up to 99% dirt-trapping efficiency at 26 microns helps keep the oil cleaner and the engine running smoothly
- Extended service life that can align with longer oil-change intervals while meeting or exceeding OE expectations
- Silicone anti-drainback valve helps prevent dry starts by maintaining oil pressure within the filter
- Designed to pair with synthetic and high-mileage oils for sustained filtration under tough conditions
Real-world driving scenarios
Whether you’re towing heavy loads, negotiating stop-and-go urban traffic, or navigating dusty backroad paths, this filter is designed to perform. The combination of filtration media and valve protection supports consistent lubrication during both everyday commutes and more demanding drives.
- Stop-and-go traffic with occasional long idle periods
- Towing, hauling, or long highway cruises
- Dusty or harsh road environments
Compatibility note: To ensure the correct fit, verify your vehicle in the part finder by entering your vehicle information. This helps confirm compatibility for Isuzu diesel engines and GM W-Series Tilt-Cabs, ensuring the right filter for your engine and oil type.
FAQ
Q: Which engines is the WIX 57521 oil filter compatible with?
A: Designed for several Isuzu diesel engines and GM W-Series Tilt-Cabs; confirm fitment by entering your vehicle details in the part finder.
Q: What driving conditions and oils does the WIX 57521 support?
A: Supports synthetic and high-mileage oils with 99% dirt-trapping efficiency and an anti-drainback valve for smoother starts, under varied driving scenarios.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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