Cummins Propane Solenoid Valve A121R
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The Cummins A121R Propane Solenoid Valve is a replacement fuel shutoff/control solenoid valve for compatible Cummins Onan propane generator fuel systems. It is used in the LPG fuel delivery system to control propane flow to the generator during operation.
Key Features
- Cummins / Onan propane fuel-system solenoid valve
- Part number: A121R
- Used for LPG / propane generator fuel control
- Helps control fuel flow to the generator
- Replacement for failed, sticking, leaking, or electrically faulty propane solenoid valves
Generator Compatibility
Use where the Cummins Onan parts breakdown specifies A121R. Confirm by generator model, spec letter, fuel type, and original valve number before ordering.
Fitment Notice
Propane solenoid valves are fuel-system and voltage specific. Match by original part number, generator data tag, connector style, mounting configuration, and fuel-system layout.
When This Part Needs Replacement
Replace this valve if it fails to open or close properly, leaks, sticks, has damaged terminals, or is confirmed faulty during propane fuel-system diagnosis.
Installation Notes
Shut off the propane supply before service. Check fittings, wiring, seals, and leak-test all propane connections after installation. Propane fuel-system work should be performed carefully and according to the generator service procedure.
Alternate/Superseded Part Numbers
- A121R
Parts Desk Insight
This part needs to be matched by the generator data tag and original valve number. With propane components, the correct voltage, fuel rating, and connection layout matter more than appearance.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.