| Revolutionary car part? | 23 |
| It may have a linchpin | 22 |
| It goes from wheel to wheel | 27 |
| Differential-gear locale | 24 |
| Wheel-to-wheel connector | 24 |
| What a drivetrain connects to | 29 |
| Wagon-wheel attachment | 22 |
| Vehicle's connecting rod | 28 |
| Toll unit on a toll road | 24 |
| Target for a grease monkey | 26 |
| Supporter of some big wheels | 28 |
| Shaft connected to a wheel | 26 |
| Shaft between the wheels | 24 |
| Running gear component | 22 |
| Revolutionary part of a car? | 28 |
| It may turn a cartwheel | 23 |
| It may spin its wheels | 22 |
| Grease gun's target | 23 |
| Differential gear site | 22 |
| Differential attachment | 23 |
| Cotter pin's place | 22 |
| Car wheels' connector | 25 |
| Bridge between Bridgestones | 27 |
| Assembly line add-on, perhaps | 29 |
| A semi lacks a front one | 24 |
| Universal-joint application | 27 |
| Turnpike toll determinants | 26 |
| Turnpike toll determinant | 25 |
| Connections for car wheels | 26 |
| Connections for big wheels | 26 |
| They keep the wheels turning | 28 |
| Eighteen-wheeler's bunch | 28 |
| A downsizing lumberjack? | 24 |
| Ruthless boss, in slang | 23 |
| Rock guitarist, in slang | 24 |
| Member of a firing squad? | 25 |
| Band guitarist, in slang | 24 |
| Members of a firing squad? | 26 |
| Lizzie Borden's weapon? | 27 |
| Nerve impulse transmitter | 25 |
| Neurotransmission site | 22 |
| Nerve cell transmitter | 22 |
| One acting on impulse? | 22 |
| Dendrite's counterpart | 26 |
| Cell impulse transmitter | 24 |
| Neural impulse conductor | 24 |
| Nervous system transmitter | 26 |
| Dendrite's companion | 24 |
| Brain transmission site | 23 |
| Biological transmitter | 22 |
| Neural impulse transmitters | 27 |
| Nerve-cell transmitters | 23 |
| Nerve cell transmitters | 23 |
| Dendrites' counterparts | 27 |
| Neural impulse carriers | 23 |
| Ladies' maids in India | 26 |
| Nursemaids, in Calcutta | 23 |
| Bart Simpson catchphrase | 24 |
| "Santa Maria!" | 24 |
| 'Sheesh in Mexico!,' | 28 |
| Sailor's affirmative | 24 |
| "Affirmative" | 23 |
| Yeoman's 'yes' | 26 |
| Yeoman's "yes" | 28 |
| Sailor's "yes" | 28 |
| "Yes, Captain!" | 25 |
| Word said with a salute | 23 |
| Congressional approval | 22 |
| Sailor's agreement | 22 |
| "All in favor" word | 29 |
| Ensign's affirmative | 24 |
| "Yes, captain" | 24 |
| "Check, mate" | 23 |
| Supporter's response | 24 |
| Supporter's answer | 22 |
| Parliamentary response | 22 |
| Admiral's affirmative | 25 |
| "I see," at sea | 25 |
| Always, to Shakespeare | 22 |
| "Sure, skipper!" | 26 |
| Word a captain likes to hear | 28 |
| First mate's reply | 22 |
| Assent on the main deck | 23 |
| Ahab's word of agreement | 28 |
| "Yes" on the sea | 26 |
| "Yes" aboard ship | 27 |
| "Yes, Cap'n!" | 27 |
| Yes, nautically speaking | 24 |
| Yeoman's agreement | 22 |
| Yeoman's "Yes!" | 29 |
| Yachtie's "yes" | 29 |
| Word of obedience, perhaps | 26 |
| Word heard on Capitol Hill | 26 |
| When repeated, a cry at sea | 27 |
| When doubled, a familiar cry | 28 |
| What those in favor say | 23 |
| Vote to allow new member | 24 |
| Sycophantic reply, on deck | 26 |
| Swabby's affirmative | 24 |
| Supporter's assent | 22 |