Description
Overview
DEF quality sensor designed to measure Diesel Exhaust Fluid concentration/quality to support accurate dosing control and emissions system performance.
Proper quality sensing helps prevent incorrect dosing, supports diagnostics, and helps maintain stable SCR operation.
Fitment
- Verify fitment with us before ordering
Note: Verify fitment with us before ordering to ensure the correct part for your application.
Why Buy Q21-6170-001 from Wisent Parts
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Fast shippingOrders before 12PM EST ship same business day.
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180-day warrantyAll parts covered from delivery date.
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Easy returns30-day returns.
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Verify fitmentSend VIN/ESN and we’ll confirm.
Shop with confidence
Warranty Information
Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.
Return Information
Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.