- Product Type: O-Ring
- Brand: ARRMA
- Model Number: Z-ARA716037 (ARA716037)
- O-Ring Dimensions: 4 x 2mm
- Quantity: 8 individual o-rings per pack
- Category: Fittings and Hardware
- Manufacturer Rating: 5 out of 5 stars
Overview
The ARRMA O-Ring, 4 x 2mm (8) Z-ARA716037 is an essential replacement and spare part for RC enthusiasts who demand reliability and precision in their hobby-grade radio-controlled vehicles. Whether you're a dedicated RC car UK competitor, a weekend basher, or someone exploring the world of RC for the first time, having quality spare parts on hand is crucial for keeping your model running smoothly. These o-rings are precision-engineered components designed to seal and secure various connections throughout your ARRMA RC vehicle, ensuring optimal performance and preventing leaks or disconnections during intense driving sessions.
O-rings are fundamental components in RC vehicles, used throughout the drivetrain, fuel systems (on nitro models), and hydraulic connections to maintain sealed, watertight connections. The 4 x 2mm size is a common specification across many ARRMA RC models, making this pack of eight rings an excellent investment for any serious RC enthusiast. Quality o-rings are often overlooked, but they play a vital role in the longevity and reliability of your RC car UK investment, preventing fuel leaks, oil seepage, and maintaining proper sealing under the stress and vibration of high-speed driving.
This pack contains eight individual o-rings, giving you multiple spares to keep your ARRMA RC vehicle in peak condition. Whether you're upgrading your current setup, building a new ready to run RC model, or simply stocking up on essential replacement parts, these ARRMA o-rings represent genuine OEM (Original Equipment Manufacturer) quality that meets the exacting standards set by ARRMA for their complete range of brushless RC vehicles and accessories.
Key Features
- Precise 4 x 2mm Dimensions — These o-rings are manufactured to exact specifications of 4mm outer diameter and 2mm cross-section, ensuring they fit perfectly into designated slots and connections throughout your ARRMA RC vehicle without binding or slipping during operation.
- Pack of Eight Rings — With eight o-rings included in this pack, you have multiple spares available for replacements, repairs, and future maintenance, ensuring you're always prepared for routine service or unexpected wear.
- Genuine ARRMA OEM Component — These are authentic ARRMA replacement parts manufactured to the same rigorous quality standards as the original components in your RC vehicle, guaranteeing compatibility and reliable performance.
- Essential Sealing Function — O-rings create watertight and airtight seals at critical connection points throughout your RC car, preventing fuel leaks on nitro models, oil seepage in transmission systems, and maintaining proper pressure in hydraulic circuits.
- Durable Elastomer Construction — These o-rings are made from high-quality rubber compounds that resist degradation from fuel, oil, heat and vibration, ensuring they maintain their sealing properties even under the demanding conditions of RC racing and bashing.
- Universal Compatibility — The 4 x 2mm size is utilised across numerous ARRMA models and applications, making this pack a valuable addition to any RC enthusiast's spare parts collection regardless of which specific ARRMA vehicle you operate.
- Cost-Effective Spares Solution — Rather than purchasing entire assemblies when an o-ring fails, these individual replacement rings provide an economical way to maintain your RC vehicle and keep it running at peak performance.
Technical Performance
O-rings are critical elastomeric sealing components that perform under significant mechanical stress and environmental exposure in RC vehicles. The 4 x 2mm specification represents a medium-sized o-ring commonly found in fuel systems of nitro-powered RC cars, transmission housings, and various sealed compartments where pressure retention is essential. These rings must withstand exposure to nitromethane fuel (which is highly corrosive to standard rubber), engine oils, water ingress from wet driving conditions, and extreme temperature fluctuations from engine heat and ambient weather. The material composition of quality ARRMA o-rings ensures compatibility with these harsh operating conditions while maintaining elasticity and sealing integrity through numerous compression and expansion cycles. In brushless RC vehicles, o-rings seal gear differentials, motor vents, and battery compartments, protecting sensitive electronics from dirt, moisture and debris during both on-road racing and off-road bashing. The cross-section diameter of 2mm provides sufficient material thickness to maintain pressure under load whilst remaining flexible enough to conform to mating surfaces and accommodate minor dimensional variations. Each o-ring in this eight-pack is individually inspected to ensure consistent quality and reliable performance, whether you're running a ready to run RC model straight out of the box or a highly tuned competition-grade vehicle. Proper o-ring maintenance—replacing worn rings regularly and ensuring they are clean and free from debris before installation—is essential for maximising the reliability and service life of all your RC equipment.
What's in the Box
- 8 x ARRMA O-Ring, 4 x 2mm (Z-ARA716037)
Frequently Asked Questions
- What are o-rings used for in RC cars? — O-rings are sealing components used throughout RC vehicles to create watertight and airtight connections at critical points. In nitro-powered RC cars, they seal fuel system connections and prevent fuel leaks. In brushless RC vehicles, they seal gear differentials, motor housings, and battery compartments to keep dirt, moisture and debris away from sensitive moving parts and electronics. They also maintain pressure in hydraulic circuits and prevent oil seepage from transmission housings. Proper o-ring maintenance is essential for reliable RC vehicle operation.
- How often should I replace my RC o-rings? — O-ring replacement frequency depends on usage intensity and environmental conditions. Regular inspection during routine maintenance is recommended—if you notice fuel leaks on nitro models, water ingress into sealed compartments, or oil seeping from transmission housings, it's time to replace the o-rings. For high-use competition vehicles, replacing o-rings every few months of regular driving is a sensible preventive maintenance practice.
- Are these o-rings compatible with all ARRMA models? — The 4 x 2mm size is used across many ARRMA RC vehicles, but you should verify compatibility with your specific model before purchasing. Consult your ARRMA vehicle manual or contact RC Model Shop's experienced team to confirm these o-rings are suitable for your particular RC car UK setup.
- What material are these o-rings made from? — ARRMA o-rings are manufactured from high-quality elastomer rubber compounds selected for compatibility with fuel, oil, and water while maintaining flexibility and sealing integrity under the mechanical stresses of RC vehicle operation.
- Can I use these o-rings on both nitro and brushless ARRMA vehicles? — Yes, the 4 x 2mm o-rings are suitable for use on both nitro and brushless ARRMA models where this size specification is called for. However, always consult your vehicle's documentation to confirm the correct o-ring size for your particular model and application.
- How should I install these o-rings? — Before installation, clean both the o-ring and the mating surface thoroughly to remove any dirt, old rubber, or debris. Apply a thin coat of appropriate lubricant (such as silicone grease for general applications or fuel-safe lubricant for fuel system o-rings on nitro models) to aid installation and improve sealing. Carefully stretch the o-ring over the component and seat it fully in its groove, ensuring it is not twisted or pinched.
Why Buy from RC Model Shop?
RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the ARRMA O-Ring, 4 x 2mm (8) Z-ARA716037 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
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- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
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- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
