Parts for your 2015 Mitsubishi Lancer-Oil pump

2015 Mitsubishi Lancer oil pump — what it does, why it matters, and how to look after it

Yes, the 2015 Mitsubishi Lancer absolutely uses an engine oil pump, and it’s very relevant to servicing. Technical sources including Mitsubishi Motors Service Manuals (Lancer 2007–2015, Group 11A – Engine Lubrication), the Lancer Evolution X/Ralliart Workshop Manuals, and the Mitsubishi ASA electronic parts catalogue all show a crankshaft-driven trochoid/gerotor oil pump integrated into the front case on the 4B11/4B12 petrol engines (and 4B11T turbo variants). General guides such as the Haynes Mitsubishi Lancer 2007–2017 Repair Manual back this up as well.

On the 2015 Lancer, the oil pump’s job is simple but vital: it pulls oil from the sump, pressurises it, and feeds it through galleries to bearings, camshafts, and the turbo (on turbo models). It keeps friction down, manages heat, and stops metal-on-metal mayhem. It’s driven off the crank, so pressure rises with engine speed, and there’s a built-in relief valve to keep things in check.

For day-to-day care, the smartest move is regular oil and filter changes using the right spec oil for local conditions. Most Lancers are happy with quality 5W-30 (non-turbo) and a full-synthetic 5W-30 or 5W-40 for turbo models, but always follow the owner’s handbook. In Australian and New Zealand conditions, sticking to about 10,000–15,000 kilometres or 6–12 months (shorter intervals for turbo or heavy use) helps the pump live a long, quiet life. Old, dirty oil thickens up, strains the pump, and can clog the pickup screen.

Signs that deserve a look under the bonnet include:

• Low oil pressure warning lamp or flicker at idle
• Tapping/rattling on cold start that doesn’t quickly clear
• Rising engine temps or a sudden change in turbo noise (turbo models)

When replacement is needed (rare, unless oil starvation or debris has been through the engine), it’s a front-end job: the crank pulley and front cover come off, and the pump assembly is serviced as part of the front case. Savvy technicians will inspect and clean the pickup, replace the front crank seal, apply the correct sealant to the cover, and prime the new pump with clean oil before first start. It’s also a good time to check the balance shaft drive and chain/tensioner condition on applicable engines. Always follow the factory torque specs and sealing procedures from the Mitsubishi service manual to avoid leaks and pressure loss.

A well-fed oil pump is almost invisible in daily driving. Keep the oil fresh, fix leaks early, and it’ll keep the Lancer’s four-cylinder humming for years.

Popular questions about 2015 Mitsubishi Lancer oil pumps

Does a 2015 Mitsubishi Lancer have an oil pump?
Yes. All 2015 Lancer petrol engines, including 2.0L and 2.4L (and turbo variants), use a crank-driven trochoid/gerotor oil pump integrated into the front case. This is documented in Mitsubishi’s factory service manuals and the Mitsubishi ASA parts catalogue.

When should the oil pump be replaced?
There’s no fixed interval