Across
1. Automotive anti-whiplash device
5. Straight-cut or ____ gear
9. Mr. MacPherson’s suspension invention
10. Brand name, broken fastener extraction tool (4,3)
11. Item connecting piston and crankshaft, briefly (3,3)
12. Trade talk for windshield pillar (1,4)
14. Avis auto or Budget buggy
16. Bombardier’s personal watercraft (3,3)
19. Wipers’ movement
21. Certain auto-electric switches
24. Post-’77 tire-sizing system (1,6)
25. Hot-rod slang, small-block Chevy V-8
26. Acorn or castellated fasteners
27. Journal on which 11-Across item rides (5,3)
Down
1. Cooling-system component
2. Noisemaker atop big-rig cab (3,4)
3. Disc-brake component
4. Transmission ratios, informally
6. Ticket-by-mail device, ____ radar
7. Tire-shop task
8. Ford SUV for getaway-car driver
13. Piston pivot (5,3)
15. Unit of auto-electric current
17. Remote-reservoir engine-lube system (3,4)
18. Mercury clone of Ford Escort
20. CD-player button
22. Really rotten ride, in a word
23. Opposite of rich in carburetion