{"product_id":"kit-piston-ring-193953","title":"Kit - Piston Ring for Defender (1986 – 2006) 0.02\" O\/S – STC77220","description":"\u003cp\u003eThis piston ring kit is designed for the 2.5 Diesel naturally aspirated engine fitted to Land Rover Defender models, providing the sealing interface between the piston and cylinder bore. Piston rings control oil consumption, maintain compression, and transfer heat from the piston to the cylinder wall - worn or broken rings typically present as excessive oil burning, blue exhaust smoke, or reduced compression. Using the correct oversize specification is critical when fitting to a rebored cylinder to ensure proper ring gap and seal integrity.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e0.020\" oversize (O\/S) specification, intended for use with a cylinder bore machined to the corresponding oversize diameter\u003c\/li\u003e\n\u003cli\u003eKit format supplies rings for one piston; confirm the number of pistons requiring replacement before ordering\u003c\/li\u003e\n\u003cli\u003eDesigned to OEM specification for the 2.5 Diesel NA engine used in the Defender\u003c\/li\u003e\n\u003cli\u003eWhen fitting, always verify ring end gap against manufacturer tolerances and inspect cylinder bores for taper or ovality before assembly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eVehicle Fitment\u003c\/h4\u003e\n\u003cp\u003eFits Land Rover Defender with the 2.5 Diesel naturally aspirated engine, produced from 1986 to 2006, where the cylinder bore has been machined to 0.020\" oversize.\u003c\/p\u003e\n\u003cp\u003eNot sure about fitment? Feel free to get in touch at \u003ca href=\"mailto:info@thomasperformance.co.uk\"\u003einfo@thomasperformance.co.uk\u003c\/a\u003e\u003c\/p\u003e","brand":"Allmakes 4x4","offers":[{"title":"Default Title","offer_id":55821823508824,"sku":"STC77220","price":8.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0890\/0070\/6392\/files\/STC77220-600x600.jpg?v=1758872087","url":"https:\/\/thomasperformance.co.uk\/products\/kit-piston-ring-193953","provider":"Thomas Performance Ltd","version":"1.0","type":"link"}