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RTC6114 - Alternator Capacitor

- €21,60
€21,60
€21,60 - €21,60
€21,60
Aftermarket Part
Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.
Alternator Capacitor - a radio-frequency suppression capacitor fitted to the vehicle charging circuit. It mounts at the alternator output terminal.

The capacitor suppresses the electrical noise generated by the alternator rectifier diodes, preventing interference with the radio and other onboard electronics. It is used across Lucas alternator installations, including the A127 and A133.
Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994
Fitment Notes DEFENDER 1987-2006 — Alternator capacitor. Fits 2.5L NA Diesel, 2.5L Turbo Diesel, 2.5L 200 TDi, 2.5L Petrol, 3.5L V8 Twin Carb Petrol variants (with/without AC)
DISCOVERY 1 1989-1998 — Alternator capacitor. Fits 2.5L 200 TDi (to (V)LA081991), 3.5L V8 Twin Carb Petrol, V8 EFI (Lucas A127)
RANGE ROVER CLASSIC 1986-1991 (To HA610293) — Alternator capacitor. Multiple alternator types inc. V8 Twin Carb, 65Amp
RANGE ROVER CLASSIC 1992-1994 (From JA610294) — Alternator capacitor. Fits 2.5L Turbo Diesel VM, 2.5L 200 TDi, V8 EFI (Lucas A127 and A133)
Alternative Codes
RTC6114

In stock 1 unit
1 · Gouda 0 · Drachten
Express delivery available

When will my order arrive?
  • Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
  • UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
  • Netherlands / Belgium / Germany: 2–4 working days.
  • Other EU countries + UK: 4–8 working days.
  • Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the Alternator Capacitor (RTC6114) used for?
The RTC6114 is a radio-frequency suppression capacitor that fits at the alternator output terminal. It suppresses the electrical noise from the alternator's rectifier diodes, stopping interference with the radio and other electronics. It's used across Lucas alternator installations including the A127 and A133.
Which Land Rover models does the RTC6114 capacitor fit?
The RTC6114 capacitor fits the Land Rover Defender (1987-2006), Discovery 1 (1989-1998) and Range Rover Classic, across various Lucas alternator installations. Coverage spans diesel, TDi and V8 petrol variants. Use your VIN and alternator type to confirm the right fit for your vehicle.
What does this capacitor connect to on the alternator?
The RTC6114 mounts at the alternator output terminal on the charging circuit. It typically fits Lucas alternators such as the A127 and A133, and its job is purely electrical noise suppression, not charging. If your radio picks up an engine-speed whine, a failed suppression capacitor is a common cause.