Summarize Reviews logo Summarize Reviews

The best automotive replacement engine relays you can buy

Skip the endless search page - start from a short list.

Product Category Search

The best automotive replacement engine relays you can buy

AI-generated summary · updated September 10, 2026 · verify details before purchase.

  1. Bosch 0 333 100 040 Ignition Relay
    Best overall Bosch

    Bosch 0 333 100 040 Ignition Relay

    4.6/5 $24.30 Only 13 left

    Reliable OEM-quality relay that handles high current ignition loads with durability.

    • OEM fit
    • High durability
    • Higher price
    View on Amazon manufacturer site
  2. AC Delco 17-098 Fuel Pump Relay
    Best budget pick GROBARPART

    AC Delco 17-098 Fuel Pump Relay

    4.5/5 $10.99 Only 1 left

    Affordable replacement that meets original specifications for fuel pump circuits.

    • Cost effective
    • Exact OEM spec
    • Plastic housing
    View on Amazon manufacturer site
  3. Dorman 236-037 Engine Cooling Fan Relay
    Best for cooling systems Dorman

    Dorman 236-037 Engine Cooling Fan Relay

    4.4/5 $43.03

    Designed for high amperage cooling fan circuits, ensures consistent fan operation.

    • High amperage
    • Easy install
    • Limited color options
    View on Amazon manufacturer site
  4. Standard Motor Products 3N001 Starter Relay
    Best starter relay Standard Motor Products

    Standard Motor Products 3N001 Starter Relay

    4.5/5 $14.33

    Robust relay built for starter motor applications, offers low resistance contacts.

    • Low resistance
    • Robust build
    • No LED indicator
    View on Amazon manufacturer site
  5. VDO 550-040 Ignition Coil Relay
    Best for performance engines Sonzrod

    VDO 550-040 Ignition Coil Relay

    4.3/5 $15.99 Only 3 left

    Handles high voltage spikes from performance ignition coils, maintains stable output.

    • Handles spikes
    • Performance focus
    • Slightly larger
    View on Amazon manufacturer site
  6. Motorcraft 5Q3067 Fuel Pump Relay
    Best OEM match Motorcraft

    Motorcraft 5Q3067 Fuel Pump Relay

    4.6/5 $29.47

    Exact Ford OEM part ensures seamless integration with factory wiring harnesses.

    • Exact OEM match
    • High reliability
    • Premium price
    View on Amazon manufacturer site
  7. Delphi 13531 Relay for Engine Sensors
    Best sensor relay BAYDE

    Delphi 13531 Relay for Engine Sensors

    4.4/5 $21.99 Only 1 left

    Optimized for engine sensor circuits, provides stable signal transmission.

    • Signal stability
    • Compact size
    • Limited amperage
    View on Amazon manufacturer site

Buying tips

When choosing an engine relay consider the specific circuit amperage, compatibility with your vehicle's wiring harness, and whether you need OEM exactness or a cost-effective aftermarket option. High-current applications like starter or cooling fan relays benefit from robust contacts and low resistance, while ignition and sensor relays prioritize voltage handling and signal stability.

Related Queries