Key System Transit Lines GM TDH4801 # 2103 was as part of a 21 bus order
(2100-2120) delivered new in 1958 as replacements for Key System’s San Francisco-Oakland
Bay Bridge Railway trains in 1958.
played a significant role in local transit history.
It was the first bus in revenue service for AC Transit when they took over
operations from Key System Transit Lines shortly after midnight the morning
of Saturday, October 1, 1960. 2103 had been on long term loan to AC Transit
Western Railway Museum,
who donated the bus to the PBM in April 2013. The PBM is pleased to add
this restored and operable GM “Old Look” to the museum’s bus collection.
Manufactured by General Motors Truck & Coach Division,
TDH4801, Serial # TDH 4801-530. Built 1958
train: GM 6-71 Diesel engine w/ 2 speed Hydromatic transmission
Aluminum monocoque body construction
Seating: 48 passengers - Transit seating
37.9 ft. - Width 102 in.
2103 is restored and operable.
Replacement of two cracked
windows and installation of side window rubber seals remain.
Adopt This Bus
Support the PBM’s bus preservation efforts. Join the museum’s Adopt-A-Bus
program. Adopt this bus or any PBM bus of your choice by contributing to a
special fund account reserved for maintenance and or restoration of each
bus. All of the PBM’s buses have their own special accounts and all funds
donated to a particular account will be used only for that bus.
donate to the Special Funds account for this bus indicate Key System
on your contribution.
Click here to make a donation to the "Pacific Bus Museum" for this bus.