Parts for your 2015 Mitsubishi Lancer-Fuel pump

2015 Mitsubishi Lancer fuel pump — purpose, service and replacement

Yes, a fuel pump is absolutely used on the 2015 Mitsubishi Lancer. All petrol variants (2.0L 4B11 and 2.4L 4B12) run an electric, in‑tank fuel pump module in a returnless system, and diesel variants use an in‑tank lift pump feeding a high‑pressure pump for common‑rail injection. This layout is documented in the Mitsubishi Lancer CJ/CF Workshop Manual (Group 13A: Fuel), the Mitsubishi ASA electronic parts catalogue, and major OE supplier catalogues (Bosch/Delphi). That means the fuel pump is relevant to every 2015 Lancer on Aussie and Kiwi roads.

The pump’s job is to supply steady fuel pressure to the rail so the injectors can do their thing. On petrol models the pump module typically bundles the electric pump, a strainer, an internal pressure regulator and (on most trims) a non‑serviceable filter. On the DI‑D diesel, the in‑tank pump feeds the high‑pressure system and works alongside a serviceable engine‑bay fuel filter. When the pump is healthy, starts are crisp, acceleration is smooth and fuel economy stays on point.

There’s no scheduled replacement interval for the Lancer’s petrol in‑tank pump. Instead, owners should watch for tell‑tale signs and keep up with good fuel hygiene. Using reputable 91–98 RON petrol, keeping more than a quarter‑tank on long drives, and replacing the tank seal if the module is removed are simple ways to keep it happy. Diesel owners should replace the engine‑bay fuel filter as per the service schedule.

• Common symptoms of a tired pump: long crank or no‑start, hesitation on hills, surging at motorway speed, a whining noise from the tank, or fault codes for low fuel pressure (e.g., P0087).
• Basic replacement outline (petrol): disconnect the battery, relieve fuel pressure, lift the rear seat base, remove the service cover, unplug the connector and lines, then release the locking ring to lift out the module. Always fit a new O‑ring, torque the ring correctly, and check for leaks.
• Testing: a shop will verify delivery volume and rail pressure against specs in the workshop manual, there’s no routine “clean and keep” for the internal filter on petrol models—if it’s restricted, the module is generally replaced.

How long do they last? Often 150,000–250,000 km depending on fuel quality and use. Parts pricing varies widely by brand, and labour is typically about 1–2 hours with access via the rear seat. To ensure the right module, parts suppliers will match by VIN and build date (CJ/CF series references in ASA).

Popular questions

Where is the fuel pump on a 2015 Mitsubishi Lancer?

It’s inside the fuel tank as a complete module, accessed under the rear seat via a service cover. That applies to petrol models and the in‑tank lift pump on diesel variants.

Does the fuel filter need regular replacement on this model?

For petrol Lancers, the primary filter is built into the in‑tank module and isn’t a routine service item—if it’s blocked, the module is usually replaced. Diesel Lancers do have a separate engine‑bay fuel filter that’s serviced by interval.

What are the costs and time to replace the pump?

Most shops allow 1–2 hours. Parts vary by brand and spec, commonly a few hundred dollars in Australia and New Zealand. Always budget for a new tank seal/locking ring and a fuel line clip or two.