Parts for your 2007 Mazda Cx-7-Sump plug washers

2007 Mazda CX-7 sump plug washers

Based on Mazda technical documentation, the 2007 Mazda CX-7 (2.3L DISI turbo, L3‑VDT) uses a sump plug washer. The Mazda Workshop Manual for engine oil replacement specifies fitting a new drain plug gasket/washer during refit and gives a tightening torque for the plug. The Mazda Electronic Parts Catalog also lists a 14 mm oil drain plug gasket (commonly referenced as Mazda P/N 99564‑1400) for this model. That makes sump plug washers relevant and required for proper servicing of the CX‑7.

The sump plug washer on a 2007 Mazda CX‑7 is a small but crucial bit of kit. It’s a crush-style gasket that sits between the sump plug and the sump, creating a tight seal so engine oil doesn’t seep out after a service. When the plug is torqued up, the soft metal washer deforms slightly to fill any tiny imperfections, helping the turbocharged 2.3 to hold oil pressure and keep the driveway free of drips.

Because it’s a crush washer, it’s designed for single use. Reusing it can lead to weeping around the plug, gradual oil loss, and grime collecting on the sump. Best practice is to swap it at every oil change, right alongside the filter and fresh oil. It’s an inexpensive part that prevents a world of mess and hassle. The Mazda workshop guidance calls for installing a new washer and tightening the sump plug to the specified torque (typically 30–41 N·m), doing so avoids overtightening, stripped threads, and leaks. A proper click on a torque wrench is worth its weight in gold here.

For owners in Australia and New Zealand, where hot summers and varied driving can work oil hard, keeping the washer fresh helps the CX‑7’s engine stay tidy and well-lubed. If there’s any sign of oil mist under the plug, a drip on the undertray, or the old washer looks scored or flattened, it’s time to replace it. During servicing, it’s also smart to clean the sealing face on the sump, check the plug threads, and confirm the washer matches the 14 mm sizing used by Mazda. It’s a quick, affordable part that protects the engine and keeps service standards up to scratch.

• Washer type: 14 mm aluminium crush washer
• Recommended action: replace at every oil change
• Torque spec: 30–41 N·m (always verify against workshop manual)

Popular questions

What size sump plug washer does a 2007 Mazda CX‑7 use?
It takes a 14 mm aluminium crush washer that’s designed to deform once and seal the sump plug. Many parts catalogues list Mazda P/N 99564‑1400 for this application.

How often should the sump plug washer be replaced?
Replace it at every oil change. It’s a single-use crush washer, and swapping it each service prevents seepage and keeps the sump sealing face in good nick.

What’s the correct torque for the CX‑7 sump plug?
The workshop range is typically 30–41 N·m for this engine. Use a torque wrench and a new washer, confirm the exact spec in the Mazda workshop manual for your market.