Blue 38 Teeth Speedometer Gear

This is a reproduction speedometer driven gear, identified by both its tooth count and color. Replace your worn out, stripped or damaged original gear or simply use a different gear for speedometer correction when changing rear axle final drive ratios or changing tire sizes.

Note: The color of the speedometer gear may not be the same as your original due to additions or deletions of GM part numbers and or the consolidation of these numbers.

Similar to the red 37-tooth speedometer gear, a blue 38-tooth speedometer gear is a specific component used in the speedometer system of certain vehicles. The tooth count and color-coding are crucial factors in ensuring that the speedometer accurately reflects the vehicle's speed based on the transmission output shaft's rotation.

Here are some points regarding the blue 38-tooth speedometer gear:

Tooth Count:

The "38-tooth" designation indicates the number of teeth on the gear. The tooth count is important for translating the rotational speed of the transmission output shaft into a speed reading on the speedometer.

Color Coding:

The color blue is part of a color-coding system used by manufacturers to differentiate between different tooth counts. Each color represents a specific range of tooth counts, making it easier for users to select the appropriate gear for their vehicle.

Application:

Speedometer gears are designed to accommodate variations in axle ratios and tire sizes. Choosing the correct gear is essential to maintain accurate speedometer readings.

Compatibility:

When replacing a speedometer gear, it's important to ensure compatibility with the vehicle's transmission, axle ratio, and tire size. Using an incorrect gear can lead to inaccurate speedometer readings.

Installation:

Replacing a speedometer gear typically involves accessing the transmission tailshaft housing. This may require removing the speedometer cable and, in some cases, draining transmission fluid.

Customization:

Automotive enthusiasts may opt to change the speedometer gear when modifying their vehicles, such as installing different tire sizes or changing the axle ratio. This helps maintain accurate speedometer readings despite alterations to the drivetrain.

Also Fits:

Camaro: 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

Firebird: 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

Impala: 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996

Nova: 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977

Tri-Five Chevy: 1955, 1956, 1957

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