Across
1. Electrical system safety valve
3. Screwdriver with cruciform point
9. Downforce-enhancing race-car appendage
10. Camshaft protrusions
11. Wire-wheel component
12. Shagadelic Jaguar driver Powers
14. Variable-____ power steering
16. Creature seen on car-wax label
19. US stock-car-racing association
21. Pink-slip possessor
24. Palindromic brake component
25. Radio adjunct in some windshields
26. Carries out periodic maintenance
27. Service-department work areas

Down
1. Spark-plug type that requires gasket (4,4)
2. Brake booster synonym
4. Engine’s lubricant reservoir (3,3)
5. Runs at slowest engine speed
6. Replacement-part description, sometimes
7. Workbench-mounted grabber
8. Carmakers’ various vehicles
13. Lateral tire-tread ridges (4,4)
15. Component incorporating bendix drive
17. Items fastening leaf springs to axle (1,5)
18. Wheel-bearing lubricant
20. Brand on some scale-model cars
22. Kawasaki motorcycle for a Japanese warrior
23. Windshield-wiper components