Across

1. Cylinder sliders

5. Components returned for remanufacture

8. Unexpected engine stoppage

9. Combustion ____, explosive area

10. Inertia ____ seat belt

11. Mirror image (4,4)

13. Franchised vehicle vendor

15. Two-prong fastener, ____ pin

18. Ruined-fastener description

19. CV-joint cover

22. Engine-hood support (4,3)

23. Cylinder-repair sleeve

24. Showroom transactions

25. Increases cylinder’s diameter

Down

1. Valve-train part, perhaps

2. Cooling-system deposits

3. Engine lubricants

4. Six- or twelve-point tool

5. Online discussion venue (4,4)

6. Replacement-part description, perhaps

7. Tapered fastener

12. Carmaker-recommended replacements (1,1,1,5)

14. Race-car downforce device

16. Adjusts ignition timing, in a way

17. Power-boosting exhaust manifold

18. Tire-tread slits

20. Pink-slip name

21. Collector-car collectors’ collective