Parts for your 2013 Mazda Bt-50-Sump plug washers

2013 Mazda BT-50 sump plug washers

Based on technical sources, the 2013 Mazda BT‑50 does use a sump plug washer (also called an oil drain plug gasket). The Mazda BT‑50 UP/UR workshop manual’s engine oil change procedure specifies fitting a new drain plug washer at each service, and the Mazda Electronic Parts Catalogue lists a “Gasket, Oil Drain Plug” for this model (commonly referenced as 14 mm size, e.g., Mazda gasket 9956‑41‑400). Given the BT‑50 shares its 2.2 and 3.2 Duratorq diesel engines with the Ford Ranger PX, the Ford workshop manual echoes the same requirement to renew the drain plug gasket whenever the oil is changed. That confirms the washer is fitted and service‑relevant on the 2013 BT‑50.

On the 2013 BT‑50, the sump plug washer is a small, crush-style gasket that sits between the drain bolt head and the sump pan. Its whole job is to seal out leaks once the plug is torqued, stopping slow weeps that can leave spots on the driveway or a faint oil smell after a run. Being a crush washer, it deforms once and takes a set, which is why the manuals call for replacing it at every oil change rather than reusing it.

Owners will typically see aluminium or copper washers for this ute, both work fine as long as the size matches the plug (14 mm inner diameter for this model range is the common spec noted in parts catalogues). Genuine or quality aftermarket is sweet as—what matters most is correct sizing and a clean mating surface on the sump.

• Best practice is to replace the washer at each service interval alongside the oil and filter.
• Wipe the sump sealing face clean before refitting the plug and washer.
• Tighten the plug to the torque in the workshop manual—don’t swing off it, or the washer can over-crush and the threads can suffer.
• If there’s any sign of seepage after a change, recheck torque and washer fitment.
• Keep a couple of spare washers in the glovebox or tool kit, they’re cheap insurance against drips.

Typical signs the washer needs attention include a light film of oil around the plug, a few drops under the front of the ute overnight, or a washer that looks heavily flattened or grooved when removed. Fresh washer, correct torque, and a tidy sealing face—easy win for a tidy, leak‑free BT‑50.

Popular questions about 2013 Mazda BT‑50 sump plug washers

What size sump plug washer does a 2013 BT‑50 use?
Most parts catalogues list a 14 mm inner diameter crush washer for the 2013 BT‑50’s drain plug. That’s the common Mazda listing for the UP/UR series. If in doubt, confirm by VIN or measure the plug’s shank.

How often should the sump plug washer be replaced?
Replace it at every oil change. It’s a single‑use crush washer, so once it’s compressed it won’t seal as reliably the second time round—cheap part, big payoff in preventing leaks.

Can the old washer be reused in a pinch?
It’s not recommended. Reusing can lead to weeps or drips. If absolutely stuck, check for damage and snug the plug to spec, but swap in a new washer as soon as practical.