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STC772SG - Piston Ring Set – 2.25/2.5 NA Diesel – Standard

Original price - Original price €32,40
Original price
€32,40
€32,40 - €32,40
Current price €32,40
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.
Piston Ring Set in standard size, for the 2.25L and 2.5L naturally aspirated four-cylinder diesel engines running standard-size pistons in an unbored block.

The set covers one piston. The compression rings seal combustion pressure against the cylinder wall, while the oil control ring meters lubricating oil on the bore and returns the surplus to the sump. Worn rings show as raised oil consumption and reduced compression.

Four sets are required to rebuild a complete engine.
Vehicle Model Land Rover Defender up to 2016
Land Rover Series 2 and 3
Fitment Notes DEFENDER 1986-2006 — 2.5L 4 Cyl Naturally Aspirated Diesel; also earlier 2.25L Diesel. Standard-size piston ring set, sold per piston (Goetze rings; suits standard GKN pistons).
SERIES II/III — 2.25L Diesel.
Alternative Codes
RTC4193ZSTC772SG

In stock 2 units
0 · Gouda 2 · 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 RTC4193Z piston ring set for?
The RTC4193Z is a standard-size piston ring set for the 2.25L and 2.5L naturally aspirated 4-cylinder diesel engines. It seals the piston against the bore for compression and oil control on the Defender and Series II/III. Sold per piston.
How many sets do I need for a full engine?
You need one RTC4193Z set per piston, so a complete 4-cylinder 2.5L NA diesel rebuild takes four sets. Confirm your bore size is standard before ordering, since oversized pistons need matching oversize rings.
Which engines does this ring set fit?
The RTC4193Z fits the 2.5L 4-cylinder naturally aspirated diesel in the Defender 1986-2006 and the 2.25L diesel in the Series II/III. These are the standard-size Goetze rings suited to standard GKN pistons.
What are the signs worn piston rings need replacing?
Worn piston rings on a 2.5 NA diesel typically show as blue exhaust smoke, high oil consumption and reduced compression. Replacing the RTC4193Z rings during an engine rebuild restores the seal between piston and bore.