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- USA
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Ships within 48 hours · Estimated delivery Jun 28 - Jul 3
For Your Every Summer RSVP, with Code: SUMMER15
Description
Walker Filtration 3" BSPP 1 Um Filter 35400 LPM A31250X13" BSP Parallel Female Thread, Alpha Coalescing 1 micron Air Filter, Auto Drain, Flow 35400 Litres per Minute, Maximum Working Pressure 16 bar, Maximum Working Temperature 80 C, Walker Filtration Technical Notes: 1. Direction of air flow is inside to out through the filter element. 2. Pop up indicators (65DPUG3) are fitted to models A30025 to A30050 as standard. Differential pressure indicators (65DPIG) are fitted to models A30070 to A31500 as

Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 626 reviews
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Product Reviews
★★★★★ 1
Buy OEM
Finish is fine but sizing is wrong and these don't fit tight but rattle. About 3/4" movement in all ways, which will lead to scratched paint.
If you've got a beater, these are fine but for my clean M3, I'll buy OEM from FCP or Turner.
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Reviewed in the United States on June 15, 2024
★★★★★ 5
Great
Convenience
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Reviewed in the United States on August 18, 2020
★★★★★ 5
Fits like factory
Fits as should. No issues installing
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Fit well
All good
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Reviewed in the United States on January 20, 2026
★★★★★ 5
Fits Avis
Fit our Avis side by side perfectly
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Reviewed in the United States on March 27, 2026




