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Nostalgia Drag Racing Association (NDRA)

An organization staging drag races for older cars.

NOT Gate (inverter)

A digital logic circuit in which its signal output is the inverse or its input.

NOx

[1] Oxides of Nitrogen when combined with HC in the presents of sun light NOx forms photochemical smog.Note do not confuse NOx with nitrous oxide (N2O).

Nozzle

The orifice or jet through which fuel passes when it is discharged into a carburetor.

Np

Neptunium An element with the atomic number of 93.

NPN

Transistor with P-type base.

NPS

Neutral pressure switch.

NSRA

An abbreviation for the National Street Rod Association.

NTC

Negative Temperature Coefficient Type of thermistor in which resistance decreases as temperature increases.

NTP

An abbreviation for normal temperature and pressure.

NTPA

An abbreviation for National Tractor Pullers Association.

NTRDA

An abbreviation for National Tire Dealers and Retreaders Association, Inc.

Nucleus

The core or central part of the atom, consisting of protons and neutrons and having a positive electrical charge.

Number Failure Code

A term used for failure code.

Number Of Cylinders

The total number of cylinders (1, 2, 4, 6, or 8) contained in an engine.

Numeric Tire Rating

An alpha-numeric group molded into the tire sidewall indicating tire application, aspect ration, and rim size.

Nut

A fastener having internal threads used on a bolt to secure two or more pieces together.

NVLA

An abbreviation for National Vehicle Leasing Association.

NVRAM

Nonvolatile random access memory.

NWRA

An abbreviation for National Wheel and Rim Association.