Get your Gasoline & Diesel Fuel Injectors Remanufactured & Rebuilt by #1 Industry Experts.
Ship them to us. We clean, replace all worn components and parts, run multiple tests using the most high-tech machinery that no one has in the industry — including a live run on a real engine simulation machine under different load & weather conditions — then return them with documented results and our lifetime warranty.
What we do that no one does.
Every step documented
Every stage of the rebuild — from ultrasonic bath to final flow test — is logged and shared with you through your QR-coded Test Report.
Before & after test results
Flow charts, spray patterns, leak tests and before/after photos — every measurement is delivered on your QR-coded Test Report.
Full OEM rebuild
We disassemble each injector down to the armature and replace all internal parts with new OEM components from Denso, Bosch, Delphi and ACDelco.
Our remanufacturing & rebuilding process.
Photographed, logged, and reviewed — nothing happens without documentation. The QR code on your certificate links to your case file.
Ultrasonic bath
40kHz dual-frequency cleaner dissolves carbon, varnish and lacquer from the nozzle, pintle and internal fuel gallery — without scratching precision surfaces.
Photo loggedDisassembly to armature
Each injector is dismantled fully. Bores, seats and springs are dimensionally measured with calibrated instruments. Parts outside OEM tolerance are replaced.
Measurements loggedOEM parts rebuild
Fresh OEM seals, filters, grommets, O-rings, pintle caps & ball valves — sourced directly from Bosch, Denso, Delphi and Continental.
Parts traceableElectrical & leak test
Coil resistance, insulation & inductance checked against OEM spec. Back-leak + high-pressure seal test at 1.5× operating pressure.
Digital readingsFlow & spray bench
Bosch EPS 815 / ASNU GDI bench measures static & dynamic flow at 6+ pulse widths, plus atomization, cone angle and drip rate.
Data on your certificateEngine simulation
The only US service that runs your injectors on a real engine simulator — variable load, temperature and weather — to confirm real-world performance.
Unique to AurusSee what actually comes out of our shop.
Every set we ship is photographed before & after. These are real customer injectors — not stock images.
What are you sending us?
Everything you get — no surprises, no upsells.
- Beyond economical repair — free diagnosis
- Disassembling to core
- 40kHz dual-frequency internal + external ultrasonic cleaning
- Replacing worn parts & components with new OEM only
- Full electrical · leak · flow · spray tests
- Static + Dynamic Test @ 800 & 2,500 RPM
- Spray pattern test
- ±1–2% flow matching
- 1.5× pressure seal test
- New OEM seals, filters, grommets, O-rings
- Bosch EPS 815 · 6+ pulse widths
- Live test on a real engine
- Hardcore tests under different load and weather conditions
- Every step documented and shared
- Before/after photos + test results
- QR-coded Test Report
- Lifetime Warranty
- 1–3 business days turnaround
- Free round-trip shipping on us
Know exactly who works on your injectors — and see every step.
Most mail-in services are a black box. You ship your injectors off, wait, and hope for the best. We do the opposite — every step is documented, photographed, and signed by the technician who did the work.
Pay online · Get your label in 24h
Build your order, pay securely, and we email a prepaid shipping label within 1 business day. Free round-trip shipping included.
Real reviews from real mechanics & DIYers.
Over 2,400 verified 5-star reviews across Google, Trustpilot & eBay.
“Sent in 4 injectors from my 2008 Silverado. Came back with a full test report — variance was under 1%. Truck runs better than it did when I bought it. Worth every penny.”
“The QR code on the certificate was a nice touch. Showed it to my mechanic — he was impressed. Detailed flow numbers, not just a "passed" stamp. Will use again.”
“3-day turnaround exactly as promised. One of my injectors was beyond repair — they called before charging, gave me options. Felt honest, not pushy. Refreshing.”
Fuel Injector Remanufacturing, Rebuild & Refurbishing — All in One Service.
Aurus Engineering provides a complete fuel injector remanufacturing service for port fuel injection (PFI) and gasoline direct injection (GDI) engines. Our fuel injector rebuild service — sometimes called injector refurbishing, reman, or recon service — takes your used injectors, strips them down, replaces worn components with OEM parts, and returns rebuilt fuel injectors that perform to factory flow specification with a lifetime warranty.
Unlike generic fuel injector cleaning services, our reman process goes further: ultrasonic bath at 40kHz dual-frequency, full disassembly to the armature, dimensional inspection of every bore, seat and spring against OEM drawings, new filter baskets, O-rings, pintle caps and ball valves sourced from Bosch, Denso, Siemens, Delphi and AC Delco — then flow testing on a Bosch EPS 815 bench, high-pressure leak testing at 1.5× operating pressure, and final validation on a real engine simulator under variable load, temperature and weather conditions.
Every set ships back with a QR-coded Test Report that links to your specific case file: flow numbers per injector at 6+ pulse widths, leak results, spray pattern verification, and the technician who signed off. No other US fuel injector rebuild service offers this level of transparency or a transferable lifetime warranty on remanufactured fuel injectors.
What kinds of fuel injectors do we remanufacture?
- Port fuel injection (PFI / EFI) injectors — Bosch, Denso, Delphi, Continental, Siemens VDO, AC Delco, Marelli
- GDI (gasoline direct injection) injectors — high-pressure piezo and solenoid
- Common-rail diesel injectors — CRDi, CRDe, HPCR (request a separate quote at /services/diesel-injectors)
- Throttle-body injectors (TBI) — legacy vehicles, light trucks
- Performance & motorsport injectors — flow-matched to ±1% tolerance
Why choose Aurus fuel injector remanufacturing over new injectors?
A new OEM injector can cost $180–$450 each. Our remanufactured fuel injectors deliver the same flow accuracy and reliability for a fraction of the price, while being the environmentally responsible choice — we reuse the housing and only replace wear components. With free diagnosis, no core charges, and 1–3 day turnaround, most customers receive their rebuilt injectors faster than OEM parts can even ship from a dealer.
Still have concerns? We get it.
Refund & Guarantee Policy
Free diagnosis. Once we receive your injectors, we inspect them at no cost. If any injector is beyond economical repair, we contact you before any billable work — you decide whether to proceed.
100% refund conditions. If we cannot rebuild your injectors to factory specification, you receive a full refund of all service fees. Cancellations before your package arrives at our Long Beach, CA facility: full refund within 7 business days.
Lifetime warranty. Every rebuilt injector ships with a Lifetime Warranty against manufacturing defects. Free replacement including return shipping. Transferable to a new owner. Does not cover damage from contaminated fuel, off-spec tuning, or physical impact.
Return shipping. Approved refunds include return shipping at no additional cost.