10 Best Fuel Petcock For Generator of 2026 With a Leak-Free Seal

1

Qeykizy Generator Petcock Fuel Gas Shut Off Valve, M16 x1.5mm

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  9.6
• Brand
  Qeykizy

Key specs2

Thread Connection

M16 x 1.5mm

Valve Function

Designed as an M16 x 1.5mm fuel shut-off switch to close tank fuel supply during transport or storage.

Pros & cons32

Pros

• Uses standard M16 x 1.5mm threading to fit larger generator tank bungs
• Dedicated fuel gas shut-off design stops fuel flow directly at the tank port
• Replaces damaged or leaking fuel petcocks on matching M16 threaded tanks

Cons

• Thread size is limited to M16 tanks and will not fit smaller M10 bungs
• Product data does not list fuel line barb diameter, requiring manual hose measurement

2

Fuel Valve Petcock Fits for Generac Wheelhouse 5500 5550 8550

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  9.6
• Brand
  Manostia

Key specs1

Generac Generator Fit

• Wheelhouse 5500
• Wheelhouse 5550
• Wheelhouse 8550

Pros & cons32

Pros

• Tailored directly for Generac Wheelhouse 5500, 5550, and 8550 portable generators
• Restores positive fuel shut-off capability on specified Wheelhouse fuel tanks
• Direct replacement design avoids modification on listed Generac generator tanks

Cons

• Thread dimensions are not explicitly detailed in the listing specifications
• Does not state compatibility with non-Wheelhouse generator models

3

Savior Generator Petcock Gas Fuel Tank Shut Off Valve for

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  9.2
• Brand
  Savior

Key specs1

Supported Generator Brands

• Champion
• Generac

Pros & cons32

Pros

• Provides a dedicated shut-off switch for Champion and Generac portable fuel tanks
• Simple mechanical design allows clean isolation of fuel during generator storage
• Replaces leaking original valves on compatible Champion and Generac generators

Cons

• Exact tank bung thread diameter and pitch are not specified in the listing
• Does not include listed replacement part numbers for cross-referencing

4

JSIERLUOV generator petcock fuel tank shut off valve for Predator

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  8.4
• Brand
  JSIERLUOV

Key specs2

Direct OEM Replacement

Replaces 0j0974

Multi-Pack Quantity

2 Pack

Pros & cons42

Pros

• Direct replacement for OEM part number 0j0974
• Standard 16mm x 1.5mm thread fits tanks from Predator, Champion, and Generac
• Supplied as a 2-pack for keeping a backup petcock in your emergency repair kit
• Broad brand coverage including Etq, Homelite, Husky, and Powermax generators

Cons

• Incompatible with generators requiring smaller M10 thread bungs
• Fuel outlet barb outer diameter is omitted from the product specifications

5

Hrwfnty Generator Petcock Fuel Shut Off Valve, M16x1.5mm Nut Thread

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  8.3
• Brand
  Hrwfnty

Key specs1

Mounting Thread Size

M16 x 1.5mm Nut Thread

Pros & cons32

Pros

• Features M16 x 1.5mm nut threading to mate securely with compatible tank fittings
• Provides positive shut-off control to prevent carburetor bowl flooding
• Single-unit design serves as a straightforward swap for worn M16 shut-off valves

Cons

• Thread pitch of 1.5mm will cross-thread on tanks threaded for M10 or alternate pitches
• Listing leaves specific brand and model compatibilities unstated

6

YGQ Generator Fuel Petcock Shut Off Valve for Champion 122.070400.05

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  8.1
• Brand
  YGQ

Key specs1

Part Number Cross Reference

Champion 122.070400.05

Pros & cons32

Pros

• Matches Champion OEM part number 122.070400.05 for accurate component replacement
• Built specifically for Champion generator fuel tanks using this factory part spec
• Isolates fuel flow to prevent leakage during long-term generator storage

Cons

• Sized specifically around part 122.070400.05 without universal brand support
• Physical thread sizing and pitch are not explicitly documented in the title data

7

Generator Petcock Fuel Tank Shut Off Valve for Predator Generator

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  7.9
• Brand
  Mytkoj

Key specs1

Engine Platform Fit

• 5.5HP to 16HP engines
• 168F, 170F, 173F, 177F
• 182F, 188F, 190F

Pros & cons42

Pros

• Broad engine compatibility covering 5.5 to 16 horsepower small gas engines
• Cross-compatible with 168F, 170F, 173F, 177F, 182F, 188F, and 190F engine platforms
• Fits tank assemblies on Predator, Alton, Etq, Husky, Wen, Homelite, and Powermax units
• Isolates gasoline supply at the tank to protect engine carburetors

Cons

• Exact bung thread diameter and pitch must be verified prior to ordering
• Sold as a single unit without spare gaskets or duplicate backup valves

8

Hipa 310574GS Generator Fuel Tank Shut Off Valve Petcock for

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  7.8
• Brand
  Hipa

Key specs1

OEM Part Match

Replaces 310574GS

Pros & cons32

Pros

• Direct match for OEM part number 310574GS on Briggs and Stratton equipment
• Designed specifically for Briggs and Stratton and Troy-Bilt generator tanks
• Provides a dependable fuel shut-off mechanism to halt gas flow during outages

Cons

• Does not match Generac, Champion, or Predator tanks using M10 or M16 threads
• Tank bung thread diameter is not listed, requiring OEM number verification

9

YAMAKATO Generator Fuel Petcock Switch for Champion Generac M10 x

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  7.7
• Brand
  YAMAKATO

Key specs1

Port Thread Size

M10 x 1.25mm

Pros & cons32

Pros

• M10 x 1.25mm thread fits smaller generator fuel tank bungs precisely
• Engineered for Champion and Generac portable generator fuel systems
• Rotary fuel switch halts gasoline delivery to keep the carburetor dry

Cons

• Incompatible with generators using larger M16 x 1.5mm tank ports
• Barb outlet angle is not specified and must be verified against fuel hose routing

10

KyuerWK 2 PCS Fuel Tank Shut Off Valve Switch Petcock

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  7.3
• Brand
  KyuerWK

Key specs2

Package Contents

2 Pieces

Cross-Vehicle Utility

• Champion Generators
• Mini Bikes and Go Karts
• Dirt Bikes and ATVs

Pros & cons42

Pros

• Includes 2 shut-off valves in the package for emergency spares
• Matches OEM part number 28-1783-V on Champion generator fuel tanks
• Uses M10 x 1.25mm threading compatible with small engine equipment
• Versatile design fits Champion generators, mini bikes, go karts, dirt bikes, and ATVs

Cons

• Will not thread into M16 bung ports common on heavy-duty generator tanks
• Gasket material and fuel barb dimensions are not specified in the listing

Last update on 2026-10-16 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Does my generator take an M10x1.25mm or M16x1.5mm fuel petcock thread?

Check the outer diameter of your fuel tank bung before ordering, because portable generator valves typically use either an M10 x 1.25mm or an M16 x 1.5mm thread size. Units with M16 x 1.5mm nuts fit various generators from brands such as Generac, Champion, Predator, Etq, Homelite, Husky, and Powermax. Models built with M10 x 1.25mm threads fit select Champion and Generac setups, along with certain go-karts and dirt bikes. Confirming the physical thread diameter prevents cross-threading or stripped bung threads that ruin the fuel tank connection.

Which generator brands and models match these replacement fuel valves?

Compatibility depends on the specific generator brand and fuel tank port style. Documented models include the Generac Wheelhouse 5500, 5550, and 8550, alongside compatible units from Champion, Predator, BS, Troy-Bilt, Wen, Alton, Etq, Husky, Homelite, and Powermax. Because manufacturers sometimes change tank designs across production runs, verify your existing shut-off valve style and thread size against the replacement listing before purchasing.

What OEM part numbers do these generator fuel shut-off valves replace?

Replacement petcock switches match several common manufacturer part numbers across major generator lines. Supported part numbers include 0j0974 for 16mm x 1.5mm configurations, 122.070400.05 for Champion generators, and 310574GS for BS and Troy-Bilt units. Other valves cross-reference to OEM number 28-1783-V on Champion equipment and small utility vehicles. Checking the part number stamped on your original valve or listed in your owner manual ensures an exact replacement fit.

Does the generator fuel petcock include a filter screen and sealing gasket?

Inclusions vary by individual product package, so verify the product listing details before completing your order. Some replacement kits provide complete multi-packs, such as two-pack valve sets, but bundled accessories like sediment screens or O-rings differ across manufacturers. Always verify whether the listing includes an internal filter tube to stop tank debris and a fresh sealing washer to prevent fuel leaks at the base of the tank.

Which engine models and horsepower ratings are compatible with these petcocks?

These fuel shut-off valves match small gas engines rated between 5.5 and 16 horsepower. Compatible engine model codes include 168F, 170F, 173F, 177F, 182F, 188F, and 190F designs used on Predator, Wen, Alton, Etq, Husky, Homelite, and Powermax equipment. Check the stamped identification plate on your generator engine block to confirm your engine series matches these supported designations.

What should I do if my generator fuel valve leaks during an emergency outage?

Turn the shut-off lever to the off position immediately, shut down the generator, and drain the remaining fuel into a certified safety container once the unit cools. Operating equipment with gasoline dripping near hot engine components creates a serious fire hazard. If you must keep critical devices running while waiting for replacement parts in 2026, using a solar power bank for off-grid power keeps communication devices active without running a compromised generator. Once your replacement valve arrives, confirm thread alignment carefully so you achieve a tight, leak-free seal.