Product Specials
Live Chat

Parts Lookup
Product Specials
Live Chat

Tariff Update as of 9/18/2025: Click here to read updates.

Shop by Category

Batteries / Battery Chargers

View All
Battery Chargers

View All
AC Input Fuses
High Frequency

View All
HF Single Phase
HF Three Phase

On-Board Charger
PBM Replacement Parts
Poker - Multivoltage Charger
Power Point - Multishift Charger
Power Point - Single Phase
Power Point - Three Phase
TL Equalizer - Single Phase

Industrial Batteries

View All
12 Volt Batteries
24 Volt Batteries
36 Volt Batteries
48 Volt Batteries
72 Volt Batteries
80 Volt Batteries
Battery Accessories
Watering Systems

Bearings

View All
Bearing Assembly
Cam
Cone
Cup
Mast
Needle
Spherical
Thrust

Belts

View All
Fan Belts
Timing Belts

Braking / Drive Axle

View All
Brake Assembly
Brake Drums
Brake Shoe Hardware
Brake Shoes & Pads
Emergency Brake Handles
Hubs
Master Cylinders
Steel Rim Assemblies
Wheel Cylinders

Cables

View All
Accelerator Cables
Emergency Brake Cables

Caster Assembly
Chemical & Lubricants

View All
Anti Freeze / Coolant
Gear Oil/Lubricant
Hydraulic Oil
Motor Oil
Transmission Fluid

Cooling

View All
Bypass Hoses
Fan Belts
Fan Blades
Hose Clamps
Radiator Caps
Radiator Hoses
Radiators
Thermostats
Water Pumps

Curtis Instruments

View All
DC Contactors/Convertors
Gauges & Hour Meters
Motor Speed Controllers
Throttles

Cyclo / Motor Medic
Dynatex
Electrical

View All
Alternators
Battery Connectors

View All
Original Anderson Accessories
Original Anderson Connectors - Handles
SB 120 AMPS - Original Anderson
SB 175 AMPS - Generic Connectors
SB 175 AMPS - Original Anderson
SB 350 AMPS - Generic Connectors
SB 350 AMPS - Original Anderson
SB 50 AMPS - Original Anderson
SBE 160 AMPS - Original Anderson
SBE 320 AMPS - Original Anderson
SBX 175 AMPS - Original Anderson
SBX 350 AMPS - Original Anderson

Contact Kits
Contactors
Contacts
Control Modules
Electric Pump Motors
Fuses
Relays
Starter Drives
Starters
Starters / Generators
Transistors
Voltage Regulators

Engine

View All
Engine Components

View All
Clark

View All
4G32
4G52
4G54
4G64

Doosan
Hyster

View All
F2
FE
GM 2.4L
VA

Kalmar AC

View All
H20
H20 II

Mitsubishi / Caterpillar

View All
4G33
4G52
4G54
4G63
4G64
K21
K25

Nissan

View All
H20
H20 II
H20 II K-Series
H25
K21
K25

TCM

View All
4Y
F2SM
H20

Toyota
Yale

View All
D5
F2
FE
GM 2.4L
VA

Engine Crankshafts
Engine Cylinder Heads
Engine Manifolds
Engine Mounts
Engines

Filters

View All
Air
Fuel
Hydraulic
LPG
Oil
Transmission

Forklift Cab Enclosures
Forks / Fork Extensions

View All
Fork Extensions
Fork Pin Kits
Forks

View All
Block Forks
Class II Full Tapered and Polished
Class II Standard Tapered
Class III Full Tapered and Polished
Class III Standard Tapered
Class IV Standard Tapered
Lumber Forks

Load Back Rest
Rug / Carpet Rams

Fuel Injection
Gas Springs
Gaskets

View All
Head Gaskets
Manifold Gaskets
Overhaul Gasket Sets
Valve Cover Gaskets

Gauges / Hour Meters
Gloves, Latex
Golf Cart Parts

View All
Battery Connectors

View All
Original Anderson Accessories
Original Anderson Connectors - Handles
SB 120 AMPS - Original Anderson
SB 175 AMPS - Generic Connectors
SB 175 AMPS - Original Anderson
SB 350 AMPS - Generic Connectors
SB 350 AMPS - Original Anderson
SB 50 AMPS - Original Anderson
SBE 160 AMPS - Original Anderson
SBE 320 AMPS - Original Anderson
SBX 175 AMPS - Original Anderson
SBX 350 AMPS - Original Anderson

Conductor Cable
Contactors
Fire Extinguishers
Gauges & Hour Meters
Golf Car Jumper Cables
Head Lamps
Horns / Horn Accessories
Hose Clamps
Micro-Switches
Mirrors
Replacement Bulbs
Seat Belts
Seat/Seat Belt Accessories
Solenoids
Starters / Generators

Governors
Grease Guns & Accessories
Hardware

View All
Bolts
Brackets
Nuts
Tilt Cylinder Pins
Washers

Hub Caps
Hydraulic Pumps / U-Joints

View All
Hydraulic Pumps
U-Joints

Ignition

View All
Distributor Caps
Distributors
Ignition Coils
Ignition Modules
Ignition Tune Up Kits
Ignition Wires
Key Switches
Pertronix - Distributors
Pertronix - Ignitor Kits
Pertronix Replacement Parts
Points and Condensers
Rotors
Solenoids
Spark Plugs

Jacks / Support Stands
Joysticks
Lighting / Brackets

View All
Flash Tubes
Head Lamps
Lenses
O.E.M Lighting Brackets
Pedestrian Safety Light
Rear Lamps
Replacement Bulbs
Strobe Lamps

View All
Ecco/Preco
Universal

Universal Head Lamps

Mast Leaf Chain / Supporting Parts

View All
Mast Bushings
Mast Hardware
Mast Leaf Chain

View All
AL Series
BL Series

Pipe Sub Assembly

Miscellaneous
Mufflers / Accessories

View All
Exhaust/Tail Pipes
Muffler Cushions
Mufflers

Oil Seals
Overhaul Packing Kits

View All
Cascade
Clark
Crown
Doosan
Hyster
Kalmar AC
Komatsu
Mitsubishi/Caterpillar
Nissan
TCM
Toyota
Yale

Overstock-Clearance
Pallet Jacks / Parts

View All
Pallet Jacks - Electric/Manual
Replacement Parts

View All
EJP Replacement Parts
Manual Pallet Jack Parts

MJP-E-4400 Replacement Parts
OEM Electric Jack Parts
PTE15 Series Parts

PCV Valves
Pedals / Pedal Pads
Penray
Pertronix
Propane

View All
Aisan
ALGAS
Beam
Carburetor Accessories
Carburetors
Century
Conversion Kits
E-Controls
Fittings
GFI
Hoses
IMPCO original & generic
NIKKI
Propane Solenoid Valves
Tanks / Tank Parts

Safety

View All
Best Sellers
Back-Up Alarms
Decals
ECCO (Complete Catalog)

View All
Accessories
Back-Up Alarms
Cables/Wiring
Cameras/Monitors
Controls & Switches
Directionals
Lenses
Light Sources
Lightbars
Mounting KIts/Brackets
Strobe Lamps
Worklights

Fire Extinguishers
Horns / Horn Accessories
Lighting / Brackets

View All
Flash Tubes
Head Lamps
Lenses
O.E.M Lighting Brackets
Pedestrian Safety Light
Rear Lamps
Replacement Bulbs
Strobe Lamps

View All
Ecco/Preco
Universal

Universal Head Lamps

Mirrors
Pedestrian Safety Light
Strobe Lamps

View All
Ecco/Preco
Universal

Seating

View All
Seat Belts
Seat Cushions
Seat/Seat Belt Accessories
Seats

Sensors
Side Shifter / Fork Positioner

View All
Carriage / Side Shifter Parts
Fork Positioner
Side Shifter Assemblies

Spray Paint
Steer Axle

View All
Center Arms
Hub Caps
Hubs
Pins

View All
Center Pins
King Pins

Power Steering Cylinders
Repair Kits

View All
Center Pin Repair Kits
King Pin Repair Kits

Steel Rim Assemblies
Steer Axle Bushings
Steer Axle Hardware
Steer Axle Knuckles
Tie Rod Linkage

Switches

View All
Directional / Combination
Micro-Switches
Neutral Safety Switches
Water & Oil Senders

Tilt/Reach Cylinders
Tires
Tools
Transmission

View All
Clutch Covers / Plates
Flywheels
Ring Gears
Torque Converters
Transmission Charging Pumps
Transmission Overhaul Kits
Transmission Plates
Transmission Rings
Transmission Solenoid valves

Truck Mounted Parts
Universal / Misc. Parts
Wheels, Load & Steer

View All
Load & Steer Wheels
Load Wheel Kits

Wiring / Cables Accessories

View All
Battery Cable Terminals
Battery Cables - (No Terminals)

View All
1 Gauge - 133/22 Stranding
1/0 Gauge - 133/21 Stranding
2 Gauge - 133/23 Stranding
2/0 Gauge - 133/20 Stranding
3/0 Gauge - 259/22 Stranding
4 Gauge - 70/23 Stranding
6 Gauge - 49/23 Stranding

Battery Cables - (With Terminals)

View All
2 Gauge - Top Mount
2 Gauge - Top Mount w/Leads
4 Gauge - Side Mount w/Leads
4 Gauge - Top Mount
4 Gauge - Top Mount w/Leads
6 Gauge - Top Mount
6 Gauge - Top Mount w/Leads

Cable Loom - Black
Cable Ties
Conductor Cable
Golf Car Jumper Cables
Hand Tools
Heat Shrinkable Tubing
Lugs
Primary Wire - Rated 80Cº

View All
10 Gauge - 19/23 Stranding
12 Gauge - 19/25 Stranding
14 Gauge - 19/27 Stranding
16 Gauge - 19/29 Stranding
18 Gauge - 16/30 Stranding
6 Gauge - 56/23 Stranding
8 Gauge - 19/21 Stranding

Single Conductor Wire - Rated 105º

View All
10 Gauge - 105/30 Stranding
12 Gauge - 65/30 Stranding
14 Gauge - 41/31 Stranding
16 Gauge - 26/30 Stranding
18 Gauge - 16/30 Stranding

Solderless Terminals
Switch-To-Starter Cables

View All
2 Gauge
4 Gauge

Terminal Protector Boots

Product Details

Home>Braking / Drive Axle > Master Cylinders

Categories :

Braking / Drive Axle
Master Cylinders

MASTER CYLINDER|A138503

MASTER CYLINDER|A138503

MASTER CYLINDER|A138503

MASTER CYLINDER

LOGIN FOR PRICING

Warranty: 1 Year

Part No: A138503

Description

Bore Size - 1/2"

This part fits these trucks:

This list comes from trucks you and others in your organization have marked as favorites within Truck Lookup.

Checkout

Sign up to receive the latest news and offers!

Contact Us
Product Specials

Become A Member
Privacy Policy
Terms

2025 © All Rights Reserved