CJ340 Locking Fuel Tank Cap: Sourcing It on eBay or from Nonu Ventures
A fuel tank cap is a small part, yet on a CJ340 it does two jobs that matter: it keeps diesel in, and it lets air into the tank as fuel is used. For anyone supplying or maintaining Jeep-type vehicles, a cap that seals badly or does not vent turns into a callback. Nonu Ventures exports the locking CJ340 cap, also listed for the MM540, to importers, restoration suppliers, workshops and fleets. Here is how ordering it from us compares with buying it on eBay.
Need caps for a CJ340 or MM540? Chat with us on WhatsApp or Email us and we will confirm the fit.
The CJ340 locking fuel tank cap in brief
- Locking cap supplied with two keys and a hinged cover that protects the lock from dust and water.
- Listed for the Mahindra CJ340 and MM540.
- Grade: export grade, cross-referenced to OEM catalogues.
- The cap must seal and vent. A blocked vent starves the lift pump on long runs.
- Product page: CJ340 fuel tank cap.
Who orders this part from us
Fleet operators use locking caps to protect fuel on vehicles parked away from base. Workshops fit them when the original cap is lost or its seal has hardened. Importers and restoration suppliers keep them in stock because they are an easy add-on to a larger CJ340 order. In every case the buyer needs the cap to fit the filler neck the first time.
Buying on eBay vs Nonu Ventures
eBay is a large marketplace and many CJ340 parts are listed there by different sellers. What you get depends on the seller you pick; with Nonu Ventures the checks below are part of every order.
| Buying on a marketplace like eBay | Nonu Ventures | |
|---|---|---|
| Who you deal with | A different seller for each listing | Nonu Ventures, with one point of contact for your order |
| Grade information | Described differently from listing to listing | Export grade, cross-referenced to OEM catalogues |
| Fit confirmation | Up to the buyer to compare the details | Part number and VIN or chassis number checked |
| Photos | Photos chosen by the seller | Photos of the cap being shipped, on request |
| What you can read | Mostly seller ratings; product reviews appeared on none of the 32 live eBay listings we looked at | You talk directly to the people who check the part |
| Shipping | Seller's choice; economy or standard on 19 of those 32 listings | FedEx, DHL or UPS with tracking |
| Before dispatch | Depends on the seller | Handling time of 24-72 hours |
Figures: our check of 32 live eBay listings for Mahindra and CJ340 parts on 10 Nov 2026.
How we check a cap before it ships
- The right cap. We confirm it is the CJ340 / MM540 locking cap from the part name, or from a photo of the old cap or the filler neck.
- Your VIN or chassis number, so the vehicle is confirmed before we pack.
- Lock, keys and cover. Both keys are tried in the lock and the cover is checked. Photos are available on request.
- Dispatch by FedEx, DHL or UPS with tracking, after a handling time of 24-72 hours, with one point of contact for any questions.
What eBay buyers sometimes report
Plenty of eBay purchases go smoothly. In buyer comments on eBay listings for Mahindra parts, a few patterns repeat: parts that do not fit as expected, damage in transit and slow seller replies. Two examples, quoted exactly:
"The seller started communicating with me directly after we realized the previous part was not fitting."
— [SOURCE: eBay]
"El vendedor entrego un producto usado, prometiendo uno nueva y cobrando uno nuevo 👎"
[Our translation: The seller delivered a used product, promising a new one and charging for a new one.]
— [SOURCE: eBay]
Fitting notes for workshops
Before fitting, inspect the filler neck: dents or rust on the rim stop any cap from sealing properly. Make sure the vent path is clear, because a cap that cannot breathe lets vacuum build in the tank and the engine loses power until the cap is opened. Keep the spare key away from the vehicle, since the cap keys do not match the ignition or the doors. If a vehicle still runs short of fuel with a good cap, look further along the system: fuel pump and injector.
To prepare your cap order, send us
- A photo of the old cap or the filler neck
- Quantity and vehicle (CJ340 or MM540)
- VIN or chassis number, and destination country
Chat with us on WhatsApp · Email us
One point of contact at Nonu Ventures confirms the part against your vehicle and stays with the order until it is delivered.
Questions buyers ask us
Is the cap supplied with keys?
Yes, two keys, with a hinged cover over the lock.
Does it fit the MM540 as well?
Yes. It is listed for both the CJ340 and the MM540.
Why does a vehicle lose power on long runs until the cap is opened?
The cap is probably not venting, so vacuum builds in the tank. A cap with a clear vent path solves it.
Can you supply caps in larger quantities?
Yes. Tell us the quantity and the vehicles, and we confirm everything before dispatch.
How is it shipped?
FedEx, DHL or UPS with tracking, after a handling time of 24-72 hours.
See the CJ340 / MM540 page and the parts index for the full range.