Gas spring for rear window. - Function: provides smooth, controlled lifting of the rear window and holds it in the desired position, reducing manual effort and risk of sudden closure. - Benefits: restores reliable operation when the original gas lift is worn or failed; improves safety and ease of use; suitable for repeated opening and closing of the rear window. - Compatibility: compatible with Peugeot Partner Tepee, Citroen Berlingo (B9), Citroen Berlingo box (B9), Peugeot Partner box, and Hyundai Santa Fe I (SM). OE numbers 8717026010, 8731R9, 8717026011. - Use scenarios: 1) In a repair shop, replacing a worn rear window gas lift on Partner Tepee or Berlingo to restore easy access. 2) In cargo vans and box variants, ensuring smooth, controlled rear window operation for frequent loading and unloading. 3) In fleet maintenance, covering multiple models that share the same rear window lift design with a single part. - Notes: verify OE number and model fit prior to installation; designed as a direct fit for the listed applications.