About this part
The 07L127025 high pressure fuel pump is the genuine OEM cam-driven pump for the Audi five-cylinder 2.5 TFSI engine and the 5.0 / 5.2 FSI V10 engines, built to the Hitachi HFS034105 design and catalogued by Pierburg as 7.06032.18.0. On the turbocharged inline five of the TT RS, RS3 and RS Q3 it is the single pump that lifts fuel from the low-pressure circuit up to around 150 bar for the injectors; on the V10 FSI of the R8 and the Lamborghini Gallardo the engine uses two of these pumps, one per cylinder bank. It is a brand new, genuine quality part, supplied as one ready-to-fit unit with the tappet and the return spring, for workshops and owners chasing a low fuel pressure fault, a long crank before start, or the limp mode that follows a tired pump.
high pressure fuel pump — genuine 07L127025 cam-driven high pressure fuel pump for the Audi 2.5 TFSI five-cylinder and the 5.0 / 5.2 FSI V10; direct replacement for 07L127025E, K, L, M, N, S and T, and the 07L127026 series behind them.
OE/OEM Part Number:
07L127025, 07L127025E, 07L127025G, 07L127025K, 07L127025L, 07L127025M, 07L127025N, 07L127025S, 07L127025T, 07L127026, 07L127026G, 07L127026L, 07L127026M, 07L127026N, 07L127026S, 07L127026T
Pierburg: 7.06032.18.0
What the pump does, and why it fails
The heart of the direct injection system. Both the 2.5 TFSI and the FSI V10 spray fuel straight into the combustion chamber at pressures a normal in-tank pump could never reach, and this pump is what makes that pressure. Driven off the camshaft through a tappet, the plunger strokes several times per second, and the ECU meters delivery so rail pressure tracks demand from idle to full load. When the pump falls behind, the ECU reacts fast — first with pressure adaptation, then with a fault code and limp mode.
Failure mode one: plunger and tappet wear. The plunger runs in its barrel lubricated only by the fuel itself, and the tappet that follows the cam takes the full drive load. Petrol with poor lubricity, ethanol blends and hard tuned use accelerate the wear on these performance engines. The first symptoms are slow to build pressure: extended cranking before the engine catches, a rough idle in the first seconds after start, and P0087 (fuel rail / system pressure too low) under load. On a tuned 2.5 TFSI the standard pump is already working near its limit, so wear shows up earlier than on a family hatchback.
Failure mode two: the internal shaft seal. This is the failure that makes preventive replacement worthwhile on these engines. The seal between the pump drive and the plunger barrel wears with age, and when it leaks, fuel escapes past the drive straight into the camshaft housing and from there into the engine oil. Nothing dramatic happens at first — just a faint fuel smell and oil level that creeps up — but the diluted oil loses its film strength and bearing damage follows, up to a major engine failure. Rising oil level on a 2.5 TFSI or an FSI V10 should always put the high pressure pump seal on the suspect list.
Failure mode three: tappet and cam damage. A worn or scored tappet chews into the cam lobe that drives it, and metal debris travels through the pump into the rail and the injectors. A damaged lobe then destroys a new pump in short order, so any pump replacement on a high-mileage or hard-driven engine should include an inspection of the cam lobe and the tappet face before the new unit goes in.
Symptoms, diagnosis and installation
• Typical symptoms — extended cranking before a hot or cold start, rough idle in the first seconds, hesitation or a flat spot under load, P0087 / P0088 fuel pressure faults, limp mode with the EPC light, random misfires with fuel pressure correlation codes, and on the seal-failure case an oil level that rises and oil that smells of petrol.
• Confirm it before ordering — read the fault codes first: pressure-too-low under load points at the pump, while pressure faults at idle only often point at the low-pressure sender or the in-tank pump. Watch actual versus demanded rail pressure on a scan tool through a full throttle pull: actual falling behind demanded as rpm rises is the pump. Check the low-pressure side too — a clogged filter or a weak lift pump starves the high pressure pump and mimics a worn unit. If the oil level is climbing, send a sample for dilution testing before the bearings pay for it.
• Installation notes — relieve the fuel pressure and disconnect the battery before opening the system. Remove the high-pressure pipe, the supply line and the connector, then unbolt the pump from its mounting. Fit new seals where specified — reusing the pipe seals is the most common cause of a pressure leak after the job. Refit in reverse, torque the mounting bolts and the pipe union to the published figures, prime the system by cycling the ignition, then bleed and verify rail pressure against demand on a scan tool before releasing the car. Clear the stored faults and the pressure adaptations.
• Fitment caution — the later 400 PS generation of the 2.5 TFSI in the TT RS 8S and the facelift RS3 8V uses a different pump, and the V10 engines take two pumps per car, one per bank, so count before you order. This 07L127025 series unit fits the CEPA / CEPB / CZGA / CZGB / CTSA era five-cylinder and the FSI V10 listed in the table. Confirm the old pump number on the unit or send us a photo of the original before ordering.
Fitment
The 07L127025 pump serves the first generation of the Audi five-cylinder 2.5 TFSI family — TT RS 8J, RS3 8P and early 8V, RS Q3 8U — and the 5.0 / 5.2 FSI V10 of the Audi R8 and the Lamborghini Gallardo. The engine code, not the model name, is the reliable check, and on the V10 engines remember the car takes two pumps. The table below lists the usual applications; confirm yours against the old unit before ordering.
| Make | Model | Years | Engine |
|---|---|---|---|
| Audi | TT RS 8J Coupé / Roadster | 2009 – 2014 | 2.5 TFSI — CEPA, CEPB |
| Audi | RS3 8P Sportback | 2011 – 2012 | 2.5 TFSI — CEPA |
| Audi | RS3 8V Sportback | 2015 – 2016 | 2.5 TFSI — CZGB |
| Audi | RS Q3 8U / RS Q3 performance | 2015 – 2019 | 2.5 TFSI — CTSA, CZGA, CZGB |
| Audi | R8 5.2 FSI quattro (Type 42) | 2009 – 2015 | 5.2 V10 — BUJ, CMPA, CTYA, CTPA, CTPB (two pumps per car) |
| Lamborghini | Gallardo 5.0 / 5.2 | 2004 – 2013 | 5.0 / 5.2 V10 — two pumps per car |
Shipping and packing
Orders leave within one to two working days of cleared payment, packed in a foam-lined box with the plunger protected so the drive end, the pipe unions and the tappet arrive undamaged. Tracking is emailed when the parcel is handed to the carrier. Customs charges, where they apply, are the buyer’s responsibility.
Condition & warranty
Brand new genuine quality 07L127025 pump, twelve months warranty against manufacturing defects covering the pump as supplied. The warranty does not cover damage from fuel contamination or wrong-spec fuel, from a worn cam lobe or tappet that was not inspected before fitting, from a blocked fuel filter starving the pump, or from incorrect installation torque. If a part arrives faulty, send us photos and the fault scan before returning anything.
Wholesale
Tiered pricing for 1 pc, 5 pcs and 20 pcs is shown below. Workshops and resellers servicing 2.5 TFSI and V10 FSI engines should ask for a combined quote — we price mixed orders of high pressure pumps, injectors, seals and low-pressure senders together, and remember the V10 cars need two.
