
Description
Overview
12V/300A intake pre-heater relay designed to switch high-current power to the intake air heater to support cold-start performance and stable warm-up operation.
Proper relay operation helps ensure reliable heater activation and consistent electrical control under high-load conditions.
Fitment
- Volvo
- Mack
Note: Verify fitment with us before ordering to ensure the correct part for your application.
Why buy 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