ATRO MS99-63399-HT High Temp Shifter Isolator Bushing Kit Union Speedometer reads zero or fluctuates

Speedometer reads zero or fluctuates erratically while the truck is moving

and trailers running standard FMVSS-121 air brake systems

820 lbs Suspension Kenworth Airglide 100 (AG100) Cross References

Visible oil leak from the shock body or stem seal

ATRO MS99-63399-HT High Temp Shifter Isolator Bushing Kit Union Speedometer reads zero or fluctuatesDetails: MS99 63399 HT high temp shifter isolator bushing kit. Inside Diameter . 84" Outside Diameter Reference 1 1 2" Warranty 3 years Install Tool PT99 63399 Kit Components: (1) Shifter Isolator Bushing (2) Step Bushings (1) Shoulder Bolt (1) Lock Nut Cross Reference: Automann M23311 Automann M23311E Automann M23311EUB Automann MM23311UB Dyco DT1437 Dyco DT1438 Freightliner FUL K 3399 Fuller Transmission 21244 Fuller Transmission 23311 Fuller