- B -

Bbl

An acronym for barrel.

BBM

An acronym for break before make, as in a switch.

BCDD

Boost Control Deceleration Device

BCI

An acronym for Battery Council International.

BCM

An acronym for body control module.

BDC

Bottom dead center

Be

Beryllium An element with the atomic number of 4

Bead

1. That part of a tire that contacts the rim of a wheel. 2. A narrow half-round pattern where metal has been welded together.

Bead Filler

A rubber piece positioned above the bead to reinforce the sidewall and act as a rim extender.

Bead Lock

A plate that clamps a tire bead to a wheel rim used on circle-dirt-track race cars.

Bead Wire

A group of circular wire strands molded into the inner circumference of a tire to anchor the tire on the rim.

Beam Axle

A shaft that does not transmit power but provides a means of fastening wheels to either, or both, ends.

Beam Solid-mount Suspension

A tandem suspension relying on a pivotal mounted beam, with axles attached at the ends for load equalization.

Beans

Performance term for horsepower.

Bearing

An antifriction device having an inner and outer race with one or more rows of steel balls or rollers.

Bearing Block

The outside surface of a bearing that seats against the housing bore.

Bearing Bore

A term often used for housing bore.

Bearing Cage

The steel component that holds the rollers together in a tapered roller bearing.

Bearing Cap

A device that retains the needle bearings that ride on the trunnion of a U-joint and is pressed into the yoke.

Bearing Cap Register

The cut-out portion of the engine block that keeps the bearing cap aligned to the housing bore.