Overflow & Expansion Tanks

Your vehicle’s cooling system works hard under pressure and Tinkr’s collection of overflow and expansion tanks ensures it stays safe, efficient, and leak-free. These essential components are designed to manage excess coolant as engine temperatures rise, preventing dangerous pressure build-up and protecting your radiator and engine from overheating or damage.

Whether you’re replacing a worn tank or upgrading for performance and durability, our range of high-quality expansion and overflow tanks offers dependable solutions for a wide variety of makes and models. Made from heat-resistant materials and engineered for a perfect fit, each product in this collection is built to handle the daily demands of modern driving from city streets to rugged backroads.

At Tinkr, we know how vital coolant recovery is to engine health. That’s why we source only reliable, long-lasting parts that meet or exceed OEM standards. With fast NZ-wide delivery and expert support, you’ll find exactly what your system needs to perform at its best.

Trust Tinkr for overflow and expansion tanks that keep your ride cool, clean, and confidently on the move. Shop now and maintain the pressure without the stress.

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FAQs

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What payment methods can I use?

We can take payment from most major credit cards - like Visa and Mastercard. We can also offer AfterPay and manual bank transfer.

Are the autoparts on your website genuine?

They certainly are! We only partner with leading global manufacturers and suppliers to ensure our customers get the best product AND price.

Do you offer warranties on your autoparts?

We do offer warranties on most parts! Refer to the individual part information or speak to a member of our team to learn more.

Tinkr Reviews

  • Thank you - so quick in delivery with my order. I was expecting at least another 3-4 days to arrive. Great website easy to order with the illustrations, saving a lot of guess work when choosing your items. Well done!
    testimonial author avatar
    William
  • We got the part shipped within a day all the way down to the West Coast! I accidentally ordered the wrong article and they helped me out and replaced it straight away. You guys are awesome!
    testimonial author avatar
    Anna
  • Chuck & Greg from Tinkr were very helpful finding the correct auto transmission filter kit for us, fast & efficient, overnight delivery at a very reasonable price $127, both Repco & Supercheap quoted $439. This is first time we have dealt with Tinkr Limited and we would not hesitate to purchase from them again. Thanks for the fantastic service!
    testimonial author avatar
    Del

TINKR is your most comprehensive New Zealand owned auto parts store. With over 150,000 car parts, accessories & tools, to suit a huge range of passenger cars, 4x4s and commercial vehicles. Whether you're after a cambelt, a fan belt, or a seat belt, for a Toyota Corolla, a Mitsubishi Lancer, or a trusty Mazda Familia - TINKR has it covered.

So long as you know what parts you need, the job's tidy. Simply enter your vehicle's 'Rego' and press search. We'll display the parts that fit that particular vehicle. If the parts you need aren't displaying, no drama. Send us a 'Parts Request' and we'll do our best to supply them.