Skip to content
8–23 August: reduced summer staffing. Orders may take up to 5 extra working days to dispatch and emails up to 2 working days to answer. Thanks for your patience.
8–23 Aug: orders may ship up to 5 days later.

RTC6066SG - Piston Ring Set – 3.9 V8 – Standard – Per Piston

Original price - Original price €36,10
Original price
€36,10
€36,10 - €36,10
Current price €36,10
OEM Part
OEM: Made by an Original Equipment Manufacturer. This part is made by an original equipment manufacturer or under their license, ensuring compatibility and quality.
Brand AE
Piston Ring Set for the 3.9 litre Rover V8, supplied at standard size and covering one piston - eight sets are required to do a complete engine.

The rings perform three distinct jobs in the cylinder bore: they seal the combustion chamber so that compression and combustion pressure act on the piston rather than escaping into the crankcase, they conduct heat out of the piston crown into the bore wall and on into the coolant, and they meter the oil film left on the bore so that the cylinder is lubricated without oil being drawn into the combustion chamber.

Worn, glazed or gummed rings present as high oil consumption, blue exhaust smoke, low or uneven compression readings, and crankcase pressurisation.

Rings should only be fitted to a bore that has been measured and, where required, honed to restore the crosshatch finish. Check the ring end gaps squared up in the bore before assembly and stagger the gaps around the piston as specified rather than aligning them.

Vehicle Model Land Rover Defender up to 2016
Land Rover Discovery 1 1989-1998 (L318)
Range Rover Classic up to 1994
Range Rover Classic 1994-2001 (P38)
Fitment Notes DEFENDER 90/110 — 3.9 litre V8, piston ring set (standard, per piston)
DISCOVERY 1 — 3.9 litre V8, piston ring set (standard, per piston)
RANGE ROVER CLASSIC — 3.9 litre V8, piston ring set (standard, per piston)
RANGE ROVER P38 — 3.9 litre V8, piston ring set (standard, per piston)
Supplied by AE (Associated Engineering)
Alternative Codes
RTC6066SRTC6066SGRTC6066SX

In stock 9 units
9 · 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 this piston ring set for?
This piston ring set seals the cylinder bore on the 3.9 litre Rover V8, holding combustion pressure, carrying heat out of the piston and metering the oil film. It's supplied at standard size and covers one piston, fitting the Land Rover Defender, Discovery 1, Range Rover Classic and Range Rover P38.
How many sets are needed for a 3.9 V8?
The 3.9 V8 has eight cylinders, so a complete engine needs eight of these per-piston ring sets. Order eight when re-ringing the whole engine and match them to standard bores rather than rebored ones.
When should the 3.9 V8 piston rings be replaced?
Renew the piston rings whenever the pistons come out during a V8 overhaul. Worn rings typically show as low compression, high oil use and blow-by. Standard rings suit standard bores; a rebored block needs the matching oversize.