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Steel Adapter, 1-1/4-11-1/2 Male NPT To 3/4-14 Female NPT, Bushing

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Description & Features

Manufactured by Eaton Aeroquip, this steel bushing adapter transitions from a 1-1/4-11-1/2 male NPT thread to a 3/4-14 female NPT thread, making it a practical solution for reducing pipe thread connections in grease, instrumentation, and hydraulic system assemblies. The Steel Adapter, 1-1/4-11-1/2 Male NPT To 3/4-14 Female NPT, Bushing is part of the Danfoss/Eaton 2081 Series and carries catalog number C1BA40.

The bushing configuration allows direct installation into a female-threaded port, with the smaller female NPT opening accepting a male-threaded fitting or component downstream. Suited for a wide range of hydraulic and fluid handling applications where a pipe thread size reduction is required at a connection point.

SKU: 2081-20-12S

Supplier Part Number (MPN): 2081-20-12S

Alternate Part Numbers: C1BA40, JBT-118-2659-013, MI-00325825, MINO-00015F67646

Specifications

A
1.47
Alternate Part Numbers
Alternate Part Number C1BA40, Alternate Part Number JBT-118-2659-013, Alternate Part Number MI-00325825, Alternate Part Number MINO-00015F67646, Alternate Part Number MINO-00925X09399
Application
Other - Grease, instrumentation, and most hydraulic systems
Brand
Danfoss Power Solutions (II LLC Aeroquip)
Brand
Aeroquip
Pack Size
1.00
UOM
EA
End Gender 1
13554
End Gender 2
13555
End Size 2
0.75
End Type 1
NPTF
End Type 2
NPTF
Minimum Working Temperature
-65
Supplier Part Number
2081-20-12S
Thread 1
1-1/4-11-1/2
Thread 2
3/4-14
Thread Sealant
No
Product Weight
0.65 lbs

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Product Questions & Answers (2)

Question by: Randy K on Jun 19, 2025, 2:49 PM
i’ve got a 1-1/4-11-1/2 male NPT port and need to step down to 3/4-14 female NPT. is this the right bushing?
Answer by: Customer Support on Jun 21, 2025, 6:04 AM
For a straight pipe thread reduction, it matches that setup. One end is 1-1/4-11-1/2 male NPTF and the other side is 3/4-14 female NPTF, so it adapts a larger female port down to a 3/4 male NPT connection.
Question by: Wade R on Nov 5, 2025, 5:38 PM
Got a 1-1/4 NPT male port on a pump housing and need to step it down to 3/4 female for a smaller line fitting, this bushing do that?
Answer by: Customer Support on Nov 7, 2025, 6:10 AM
That's what this one's for. The 2081-20-12S runs 1-1/4-11-1/2 male NPT on the outside and 3/4-14 female NPT on the inside, so it threads into your 1-1/4 port and gives you a 3/4 female opening to work from. Straight reducer bushing, no elbows or offsets involved.

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