Free shipping on eligible orders of $100 or more. Oversized and freight items excluded.

Shop parts / aFe / New

aFe DFS780 Diesel Lift Pump Wiring Kit - Relay to Boost

aFe · New

aFe DFS780 Diesel Lift Pump Wiring Kit - Relay to Boost

MPN 42-90002 · Store SKU afe42-90002

$88.75
CHECK AVAILABILITY0 in supplier warehouses. Ask JuiceBuilt about availability.

Supplier stock checked 11/7/2026, 1:17:30 PM UTC. Adding a part does not reserve it.

30-day returns for unopened, unused new parts

Request a return within 30 calendar days after delivery. New parts must be unopened and unused.

Shipping & returns ↗This policy does not limit rights required by law.

Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.

Product details

The boost activated wiring kit allows any DFS780 system to be operated only under load. Reduces wear and tear on the DFS780 pump. Note: This system only works in series with the factory fuel system. DFS780 Lift Pump Wiring Kit: Relay to Boost

Manufacturer fitment & guides

Check 42-90002 against the manufacturer’s application information below.

Part-specific notes

  • California Proposition 65: Y

Manufacturer documents

More from aFe ↗See the JuiceBuilt workshop ↗

YOUR NEXT MOVE

Your build.