Across
1. Drum-brake system footwear
3. Battery hydrometer info, ____ gravity
9. Bearing components, perhaps
10. Japanese warrior’s Kawasaki motorcycle
11. OBD scan-tool data
12. With 8-Down, exhaust-manifold item
14. NY tags motto, The ____ State
16. Alternator’s stationary windings
19. Nickname for Chevrolet emblem (3,3)
21. Dwell ____, ignition-timing spec
24. Serpentine-belt pulley type
25. Bolt specification, _____ strength
26. Incorrect-alignment indicator, perhaps (4,4)
27. Precise carburetor apertures

Down
1. Timing-chain’s partner
2. Lubed a squeaky door hinge
4. Reciprocating engine item
5. A custom, multi-layer paint
6. Serpentine-belt predecessor (3,4)
7. Auto-paint layer
8. See 12-Across clue
13. Self-propelled undercar vehicles
15. ’97-’02 Chryco hot rod
17. Automotive gearbox, slangily
18. Nissan model since ’82
20. Range of con-rod-journal movement
22. Tubular sleeve for valve stem
23. Valve’s maximum movement