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JMCHstore

OEM Gas Fuel Tank Vent Valve w/Grommet for Generac GP5500 GP6500,Roll Over Valve for RS8000E 5000W 8000W Generator, 0J7921

Based on 150 reviews
Condition: New
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$12.48
Save $18.02 was $30.50

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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Oct 30
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At a glance

Condition
New
Model
OJ7901
Material
Stainless Steel
Exterior Finish
Metallic Coating
Inlet Connection Size
1.2 in
Inlet Connection Type
Threaded
Valve Type
Ball Valve
In the box
1 x roll over valve

Features 7

  • JMCHstore OEM Roll Over Valve for Genuine Generac Models 0059870 & 0059890
  • For Generator GP5500 GP6500 GP7500E XT8000E RS8000E XP6500E XP10000E GP17500 etc.
  • Generac Part # 0J7921, Please DO Check the install data before purchase, Vent hole for vent valve on tank diameter: 30.5mm/1.2inch
  • Lower Ventilation Resistance: when the air flow rate is 3L/min, the resistance is less than 200mmAq

Specs 22

Material Stainless Steel
Brand JMCHstore
Exterior Finish Metallic Coating
Inlet Connection Size 1.2 inches
Inlet Connection Type Threaded
Outlet Connection Type Threaded
Maximum Operating Pressure 30 kilopascal
Number of Ports 2

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Oct 30

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

Great value!!
Perfect fit and function. OEM quality.
Reviewed in the United States on January 7, 2026 by Keith
Quality part
Great 👍
Reviewed in the United States on August 30, 2026 by John taylor
It fits Honda Black Max Generator BM907000A
Fuel Tank Vent Valve fit perfectly. Highly recommend Roz Jones Kilgore, Texas
Reviewed in the United States on August 23, 2024 by Amazon Customer
A+
A+
Reviewed in the United States on May 8, 2026 by david foreman
Better than the factory one
I have been needing this for a while to keep gas from vibrating out of the tank when the old rubber gasket around the original vent valve deteriorated and fell apart. Just finished a period of running the generator for 240 hours straight and it runs better now than originally.
Reviewed in the United States on February 5, 2026 by Jack of all trades
Perfect fit
Perfect fit
Reviewed in the United States on June 15, 2025 by newbie
Does the job
The knob on my bidet broke and this works fine as a replacement.
Reviewed in the United States on June 2, 2025 by Amazon Customer
Great
Perfect
Reviewed in the United States on January 27, 2026 by Alan
How it works
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