Best Petcock Valves for Generators: Find the Right Gas Tank Shutoff
Answering the common search for a reliable petcock valve for generators, this guide highlights five compatible options that fit many major brands and models. Each product is suited for different user needs—home backup enthusiasts, hobbyists restoring portable tools, or service professionals replacing worn shutoffs. The selections below emphasize compatibility, ease of installation, and practical limitations so buyers can pick confidently.
Buyer summary table
| Product | Best For | Key Benefit | Limitations |
|---|---|---|---|
| Savior Petcock Valve | Predator/Champion/Gas-powered generators | Broad compatibility; 16mm x 1.5mm threading | Verify original size before ordering |
| YGQ 310574GS Petcock | Champion/Generac and Firman users | Multiple replacement part numbers; M10 x 1.25mm | Check actual threading for your model |
| YGQ 16mm Petcock for Predator/Generac | Predator and Generac models | OEM 16mm x 1.5mm; comes with fuel line | Large 16mm connector may not fit all tanks |
| Wodswod Two-Pack | Budget-minded buyers replacing 2 valves | 2-pack value; wide compatibility list | General compatibility; verify size |
| Hrwfnty Petcock Valve | Multiple Generac/Predator/Champion | Aluminum, corrosion resistant | Confirm 16mm x 1.5mm threading |
Savior Generator Petcock Fuel Valve (16mm x 1.5mm)
The Savior petcock is designed as a gas tank shutoff valve compatible with Predator, Champion, Generac, ETQ, Homelite, Husky, Powermax, and other brands. It uses a 16mm x 1.5mm thread with a 22mm hex nut, and it includes a broad range of engine sizes from small 5.5HP units to large 16HP and beyond. Best for: owners replacing a known 16mm x 1.5mm valve who need broad generator compatibility. Better for: Chinese and other non-OEM replacements where original part numbers differ. Limitation: confirm your original valve size before ordering to avoid misfits.
Who should buy: Home repairers or hobbyists who service a mixed fleet of Predator/Champion and similar generators and require a straightforward, universal shutoff valve. Why selected: It covers many common models and has clear threading specs. Caution: size comparison is essential to ensure 16mm x 1.5mm fits your gas tank.
YGQ 310574GS Petcock Shut Off Valve for Champion Generators
Reference part numbers include 310574GS and 189759GS, with thread sizing M10 x 1.25mm. Best for: Champion 122.070400.05 and similar Generac units, as well as Firman and other brands listed in the description. This valve is a practical alternative when OEM parts are unavailable. Better for: replacing worn shutoffs on mid-range generators that use M10 threads. Limitation: verify threading on your specific model, since multiple thread standards exist across brands.
Who should buy: Technicians or DIYers maintaining a mixed generator collection that includes Champion and Generac units. Why selected: fits a broad set of models and includes multiple compatibility references. Caution: ensure the M10 x 1.25 thread matches your fuel tank inlet.
YGQ M16X1.5mm Generator Fuel Shut Off Valve for Predator and Generac
This OEM-grade 16mm x 1.5mm valve includes a 30 cm fuel line and lists compatibility with Briggs and Stratton, Generac, Honda, Champion, Predator, and many other brands. Best for: Generac GP series and large Predator/Champion units that use the 16mm thread. Better for: users who prefer a valve with an included fuel line for quick install. Limitation: the valve is a multi-brand part; confirm exact model matches to avoid fit issues.
Who should buy: Professionals or serious DIYers replacing shutoffs on 16mm-threaded tanks across a wide generator roster. Why selected: wide compatibility and included fuel line simplify installations. Caution: the wide compatibility means you must confirm the specific model fit before purchase.
Wodswod Fuel Shut Off Valve M16 x 1.5mm (2 Pack)
Two-pack valves provide an economical solution for replacing worn shutoffs on Generac 3500W–9000W and Predator units, among others. They specify M16 x 1.5mm threads with a 22mm hex nut and On/Off 90-degree operation. Best for: buyers who want redundancy or to service a small fleet without reordering each time. Better for: projects requiring multiple valve replacements. Limitation: confirm that the 16mm thread matches your generator’s inlet on every unit.
Who should buy: Budget-conscious service technicians or homeowners with several generators in need of new shutoff valves. Why selected: offers value via a two-pack while maintaining broad compatibility. Caution: check tank dimensions and threading before buying a two-pack to avoid surplus parts.
Hrwfnty Excellent Generator Petcock Valve (M16x1.5mm)
The Hrwfnty valve is made from aluminum and emphasizes corrosion resistance with a 16mm x 1.5mm thread and a 22mm hex nut. Best for: Generac, Powermax, Predator, and Champion units requiring a robust shutoff. Better for: users prioritizing durability in metal construction. Limitation: compatibility claims cover many brands; always verify the exact model fit for your generator’s fuel tank inlet.
KyuerWK 2 PCS Shut Off Valve Switch Petcock
Two-pak petcocks advertised for a range of small engines including Champion, Gas Tank Valve types, and several OEM references. Best for: Mini bikes, go-karts, ATVs, and small generators using M10 x 1.25 or similar threads. Better for: owners who need a compact valve with multi-application compatibility. Limitation: listed applicability spans many engine types beyond generators; verify engine compatibility and thread size before ordering.
Buying Guide: Key Purchase Considerations
Thread size matters: Most generators use 16mm x 1.5mm or M10 x 1.25mm. Measure your inlet to avoid mismatches.
Compatibility matters: Some valves list broad compatibility; always confirm that your exact model is supported by the valve’s part numbers and threads.
Included fittings: Some valves ship with fuel lines or adapters. If not, plan to source compatible lines separately.
Material and durability: Aluminum valves resist corrosion, while metal valves offer robust performance in demanding environments.
Installation considerations: Check the valve orientation (On/Off 90 degrees) and clearance around the fuel tank cap.
Frequently Asked Questions
- What size is common for generator petcocks? — The most common sizes are 16mm x 1.5mm and M10 x 1.25mm; verify your model’s inlet before purchasing.
- Why replace a generator petcock? — Replacing a worn or leaking shutoff prevents fuel leaks and ensures safe fuel shutoff during operation or storage.
- Can I use a valve from a different brand? — Yes, many valves are cross-compatible, but you must confirm thread size, nut type, and overall fit for your tank.
- Should I buy a 2-pack valve? — A 2-pack is cost-effective if you maintain multiple units or want a spare, provided you confirm both fit each model.
- Do these valves come with a fuel line? — Some listings include a fuel line; others require sourcing a compatible line separately. Check product details.
- Is aluminum better than steel for petcocks? — Aluminum offers good corrosion resistance; steel can be durable but may corrode in fuel environments without coatings.