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.

RTC4188S - Piston – Standard – 2.25L Petrol

Original price - Original price €34,80
Original price
€34,80
€34,80 - €34,80
Current price €34,80
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 for the 2.25L 4-cylinder petrol engine, forming the reciprocating member within the cylinder bore that transmits combustion pressure through the connecting rod to the crankshaft.

This is the standard-size piston, machined to the nominal production bore diameter for a rebuild that retains the original cylinder dimensions. The ring grooves carry the compression and oil-control rings, and the gudgeon pin bore couples it to the connecting rod small end.
Vehicle Model Land Rover Defender up to 2016
Land Rover Series 2 and 3
Fitment Notes DEFENDER 1987-2006 — 2.25L 4-Cyl Petrol, standard size piston
SERIES 2, 2A & 3 — 2.25 Petrol, standard size piston
Alternative Codes
RTC4188RRTC4188RTC4188S608255BR 3082ERC8515RTC2863

In stock 4 units
4 · 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 does the RTC4188 standard piston do?
The RTC4188 standard piston is the reciprocating member inside a cylinder of the 2.25L 4-cylinder petrol engine. It transfers combustion pressure through the connecting rod to the crankshaft. Its ring grooves hold the compression and oil-control rings, and the gudgeon pin bore couples it to the connecting rod small end.
What vehicles and engine use the RTC4188 piston?
The RTC4188 fits the 2.25L 4-cylinder petrol engine in the Land Rover Defender (1987-2006) and Series 2, 2A and 3. This is the standard-size piston, sized to the original production bore rather than an oversize rebore.
Do I need one RTC4188 piston or a full set?
That depends on your rebuild. The 2.25L petrol engine has four cylinders, so a complete rebuild typically takes four pistons, while a single damaged bore needs just one. Pistons are usually matched to the final bore diameter, so decide based on how many cylinders you're doing.
What does standard size mean for the RTC4188 piston?
Standard size means the RTC4188 is machined to the nominal production bore diameter, for an engine still at its original cylinder dimensions. A block that has been rebored will need an oversize piston to match, so check whether your bores are standard or have been machined out.