Spill-Free Motorcycle Oil Drain Funnel

Tired of oil changes turning into a slippery mess thanks to your bike's skid plate(s)? This specialized 3D-printed oil drain funnel is designed specifically for motorcycles and dirt bikes running a 12mm drain bolt, making oil changes cleaner and easier than ever. Instead of oil pooling on the skid plate and spilling everywhere while you drain your engine oil, this funnel captures the drain bolt as it comes out and directs the oil safely past the skid plates and straight down into your drain pan. The bolt drops neatly into the center of the funnel while the oil flows smoothly out the bottom—no splashing, no trapped oil, and no cleanup nightmare. An optional TPU gasket can be printed for an even tighter seal, but it’s not required for effective operation.

How to Use:
Step 1: Use a regular 12mm socket and crack the drain bolt loose.
Step 2: Unscrew the drain bolt until it is close to coming out of the engine.
Step 3: Place the funnel onto the drain bolt head and continue unscrewing until the drain bolt drops into the funnel and oil begins draining cleanly out the bottom.

Step 4: Once the flow of engine oil has slowed down or stopped, carefully remove the funnel.

DISCLAIMER: This print works perfectly using PLA, but if you plan on doing your oil changes with your engine oil very hot, I would recomment printing in something like PETG to be on the safe side.

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If you download or print this model, I’d really appreciate it if you could leave a quick rating or share a photo of your result. Feedback helps me improve future designs, and seeing how others print and use it is always awesome. Thanks for the support, and happy printing!