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
