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RTC6442S - Piston – 2.5 NA Diesel – Standard

Original price - Original price €52,10
Original price
€52,10
€52,10 - €52,10
Current price €52,10
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.
Piston Assembly for the 2.5 four-cylinder naturally aspirated diesel, standard size.

The piston transfers combustion pressure to the connecting rod through the gudgeon pin and carries the ring pack that seals the bore and controls the oil film. Crown and ring-land geometry set the compression height and combustion bowl shape for this engine, so pistons are matched to the block rather than interchanged between diesel variants.

Standard size suits a cylinder bore that is unworn or has been honed within the standard tolerance rather than rebored oversize. Piston protrusion above the deck and ring end gaps should be checked against the engine specification during assembly.
Vehicle Model Land Rover Defender up to 2016
Fitment Notes DEFENDER 1987-2006 — 2.5L 4-cyl naturally aspirated (NA) diesel, piston assembly, standard size
Alternative Codes
RTC6442SRTC6442BR 2660RTC3052RTC4733

In stock 6 units
6 · 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 RTC6442S piston used for?
The RTC6442S is a standard-size piston for the 2.5-litre naturally aspirated four-cylinder diesel engine fitted to the Land Rover Defender (1987-2006). It forms the reciprocating assembly in the cylinder bore, sealing combustion pressure and passing it to the connecting rod. Standard size suits a bore that hasn't been rebored.
How many RTC6442S pistons are needed for an engine rebuild?
A full 2.5 NA diesel rebuild typically needs four pistons, one per cylinder. This part is sold as a single piston, so order four for a complete set. Matching all four to the same size keeps the engine balanced.
Does standard size mean it fits any 2.5 NA diesel?
Standard size fits a 2.5 NA diesel block that still has its original bore diameter, not one machined oversize. If your block has been rebored, you'll need the matching oversize piston instead. Measure the bore before ordering.
Why would a 2.5 NA diesel piston need replacing?
Pistons on the 2.5 NA diesel typically need replacing during a full rebuild, after bore wear, ring failure, or damage from overheating. Worn pistons show as high oil use and low compression. They're renewed as a set with rings and bearings.