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Cross Reference

These part numbers have the same form, fit, and function as e1251
Item Number Cage
8332156 19207
F1251 63477
MC1251 66614
F66712 56442
FF1251 56442
E1251 80724
FF1269 63477
7735410 19207

Technical Definition

Cylinder Assembly, Hydraulic Brak, also referenced with federal logistics item name code 11007 - A device consisting of a reservoir and/or cylinder, hydraulic brake, master with other components necessary to displace fluid from a central source for actuating the slave or wheel cylinders of a hydraulic brake system.

Q & A

Part number E1251
What are the historical prices for part number E1251?
No pre-dated pricing for this NSN could be found.
Does this part number E1251 have a shelf life?
No. There is no shelf life applicable for this part.
Does this part number E1251 require Demilitarization?
Non-usml/non-ccli - no demil or dod tsc required. department of commerce may impose licensing requirements to certain destinations. (note 9).
Is part number E1251 ITAR controlled?
No. This item is not ITAR Controlled.
What is the NSN for part number E1251?
Who are the manufacturers of E1251 and NSN 2530-00-359-0372?
  • U S Army Tank Automotive Command (CAGE 19207)
  • Federal Mogul Corp (CAGE 63477)
  • Trw Inc Replacement Parts Div (CAGE 66614)
  • Diamond Reo Truck Co (CAGE 56442)
  • Eis Brake Parts (CAGE 80724)


Description: Hydraulic Brak Cylinder Assembly
Part Number E1251 E1251


AAFZ Body Material
Any acceptable
ABDR Mounting Provision
Threaded mounting holes and unthreaded mounting holes
ABJH Temp Rating
Not rated
ABKW Overall Height
6.250 inches
ABMK Overall Width
3.938 inches
ABXV Bore Diameter
1.750 inches
AFDS Longest Horizontal Distance Between Mounting Centers
2.688 inches
AFDT Shortest Horizontal Distance Between Mounting Centers
2.500 inches
AFLW Actuation Method
AKBM Mounting Facility Thread Class
AKBN Mounting Facility Thread Direction
AMQZ Compressed Length
8.188 inches
ATEM Extended Length
9.625 inches
BMWH Reservoir Type
BYXG Straight Bore Inside Diameter
1.750 inches
CBBL Features Provided
Filler plug and rubber boot
CDTD Mounting Facility Thread Series Designator
CDTF Mounting Facility Thread Diameter
0.438 inches
CDTG Mounting Facility Thready Qty Per Inch (tpi)
CKSG First Piston Rod End Thread Series Designator
CKSH First Piston Rod End Thread Diameter
0.562 inches
CKSJ First Piston Rod End Thready Qty Per Inch (tpi)
CKSK First Piston Rod End Thread Class
CKSL First Piston Rod End Thread Direction
CLML Mounting Type And Location
Boss center section
CLML Mounting Type And Location
Flange piston rod end
CLMN Mounting Facility Thread Length
0.625 inches
CLMQ Mounting Facility Diameter
0.406 inches
CLMS Port Location And Quantity
3 cylinder head end
CLMT Port Style
Gasket seal
CLMW Port Thread Series Designator
CLMX Port Thread Diameter
0.500 inches
CLMY Port Thready Qty Per Inch (tpi)
CLNB Port Thread Class
CLNG Stoplight Switch Thread Series Designator
CLNM Stoplight Switch Nominal Pipe Thread Size
0.125 inches
FEAT Special Features
1.000 in.deep thd on piston rod end
National Stock Number (NSN): 2530-00-359-0372