Parts for your 2013 Lexus Is-Oil pump

2013 Lexus IS Oil Pump — what it does and how to look after it

Referencing technical sources, the 2013 Lexus IS range is fitted with an engine oil pump. The Lexus Electronic Parts Catalogue lists an oil pump assembly for the IS250 (4GR‑FSE V6) and IS350 (2GR‑FSE V6), with typical pump assemblies such as 15100‑31060 (4GR‑FSE) and 15100‑31020 (2GR‑FSE). The Toyota/Lexus Repair Manual for these engines describes a crankshaft‑driven trochoid/gerotor pump integrated into the front timing cover, feeding galleries, bearings and VVT‑i components. In some markets, diesel variants (2AD series) also use a chain/crank‑driven pump. So yes—the 2013 Lexus IS relies on an oil pump, and it’s essential to engine longevity.

The oil pump’s job is simple but critical: it pushes the right volume of oil at the right pressure through the engine. That pressurised oil creates a protective film for crankshaft and camshaft bearings, lubricates timing chains, and feeds the VVT‑i control system. It also helps cool hot spots and carries contaminants to the filter. A pressure relief valve in the pump regulates system pressure so seals and galleries aren’t over‑stressed.

There’s no scheduled replacement interval for a healthy pump, instead, focus on oil quality and service discipline. Using the grade specified in the owner’s manual (often 5W‑30 or 0W‑20 in AU/NZ, depending on climate) and changing oil and filter on time keeps the pump and pick‑up strainer clean. During services, a good workshop will check for leaks at the timing cover, listen for start‑up rattle, and investigate any low‑pressure warning with a mechanical gauge rather than guessing.

If the pump or pick‑up O‑ring is tired—or if there’s bearing wear—oil pressure can drop. On the 4GR/2GR V6, replacement means draining fluids and removing the front/timing cover, so it’s commonly tackled alongside timing chain, seal or front cover work. Best practice includes:

• Inspecting and cleaning the pick‑up strainer and sump.
• Replacing the pick‑up tube O‑ring and relevant gaskets/sealant.
• Priming the pump with fresh oil before reassembly.
• Torquing fasteners to spec and verifying hot idle pressure.

Watch for these tell‑tales: low oil pressure light, delayed pressure on cold start, metallic ticking/rumble, VVT‑i timing errors, or glitter in drained oil. Sorting those early can save a very pricey engine.

Popular questions about the 2013 Lexus IS oil pump

Does the 2013 Lexus IS actually have an oil pump?
Yes. Official Lexus parts listings and the Toyota/Lexus Repair Manual confirm a crank‑driven trochoid/gerotor pump on the 4GR‑FSE (IS250) and 2GR‑FSE (IS350) engines, integrated with the timing cover. It supplies oil pressure to bearings, chains and VVT‑i circuits. Diesel variants also use a dedicated pump.

What symptoms point to a worn or struggling oil pump?
Common signs include a low oil pressure warning, longer‑than‑usual delay in extinguishing the oil light after cold starts, rattly top‑end or chain noise, VVT‑i performance faults, or metallic debris in the oil/filter. A proper diagnosis uses a mechanical gauge to confirm pressure against spec.

When should the pump be replaced, and how big a job is it?
There’s no routine interval—replace only if pressure is out of spec, the pick‑up is blocked/damaged, there’s internal wear, or the timing/front cover is off for other repairs. On V6 models, expect significant labour because the front cover must come off, many workshops pair it with chain, seal, or leak rectification work to save on repeat labour.