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Bosch

4387304 - DEF Pump, Doser 12V

$679.00
$679.00
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Shipping calculated at checkout.
Part Number
4387304
Brand
Bosch
Condition
New
SKU
WP20504
In Stock
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Overview
DEF pump doser 12V is an emissions system component used to move and meter diesel exhaust fluid within the aftertreatment system during operation. It helps support controlled DEF delivery, maintain proper fluid flow to the dosing circuit, and contribute to stable aftertreatment performance in heavy-duty diesel applications.

Fitment

  • Verify fitment with us before ordering.

Note: Verify fitment with us before ordering to ensure the correct part for your application.

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Why buy from Wisent Parts
  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Product Information

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.