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Fuel Pump Relay Bypass Kit I Replacement Parts
$18.95
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This product has multiple variants. The options may be chosen on the product page
The Fuel Pump Relay Bypass Master Kit simplifies fuel system diagnostics by allowing you to actuate the fuel pump independent of key-on systems. This enables fuel pressure testing without starting the engine—perfect for quick and accurate troubleshooting.
Compatible with most domestic, Japanese, Korean, and German vehicles, the kit plugs directly into the fuse box in place of standard relays. It gives technicians direct control of the fuel pump circuit, streamlining diagnostics and improving accuracy.
For advanced electrical testing, an alternate version of this kit is available with loop-style relays (9038A)—ideal for use with amp clamps when measuring current draw.
Whether you’re a professional or enthusiast, this kit is essential for electrical and fuel system diagnostics.
Features and Benefits:
- Actuate fuel pumps with the engine off for pressure testing
- Bypass relays to control circuits independent of key-on systems
- Plug-in relay replacements – no modifications needed
- Choose the right kit for your application: spade, rectangular, master, or amp-loop
- Amp-loop version (9038A) allows current monitoring with standard probes
Includes:
• Small Spade Relay – Domestic, Korean, Japanese 2000+ (#9036-1) (10A/20A) • Medium Spade Relay – Domestic, Japanese 1970–2009 (#9036-2) (10A/20A) • Large Spade Relay – VW 1999–2005, Audi 2004–2006 (#9036-3) (20A/30A) • Square Relay – BMW 1995–2006 (#9037-2) • Small Rectangular Relay – GM, Chrysler, and Japanese 1985–2009 (#9037-1) • Large Rectangular Relay – GM, Chrysler, and Japanese 1995–2007 (#9037-3)
WARNING: This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
russell frederick –
Fast diagnostics Great product to cut circuit testing in half. I diagnose A/C compressors, fans , fuel pumps and anything with a relay.
Ken B. –
The Master Mechanic Wizard was Right!!! I watched a YouTube video from the Master Mechanic Wizard’s top ten tips .
He demonstrated how much of a troubleshooting time saver these relays can be for finding electrical problems.
Thank You Master Mechanic Wizard , these are just as handy as you said they were.
suzann –
Great Ok
jrb90706 –
Great if you dont want to jam a Jumper wire in Great for troubleshooting more than just fuel pump relays. Work anywhere a relay is used. Just be aware of the current draw on the system so that the switch can handle it. Wish the big relay had a heavier switch. That size relay is rated up to 70a in some systems but the switch is only rated at 20a.