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Parker P1 Piston Pump — Identification & Model Code Guide

Need parts for a Parker P1 variable displacement piston pump? Use the decoder below to identify your exact model, then send us the number. We don't stock the P1 on the shelf, but we source hard-to-find and obsolete Parker P1 parts and seal kits and can help you identify the right components.

Hard-to-Find & Obsolete Parts Sourcing
Free Model-Code Identification Help
Buna-N & Viton Seal Options
Fast Quote Turnaround
P1 Frame Sizes & Ratings — Variable Displacement, Open Circuit
Model Displacement Max outlet pressure Rated speed Flow Input power
P1075 75 cc/rev (4.58 in³/rev) 4000 PSI (280 bar) 2300 RPM 42 GPM 114 HP
P1100 100 cc/rev (6.41 in³/rev) 4000 PSI (280 bar) 2100 RPM 54 GPM 142 HP
P1140 140 cc/rev (8.85 in³/rev) 4000 PSI (280 bar) 2000 RPM 71 GPM 188 HP
Variable displacement axial piston pump · continuous operation to 280 bar · SAE & ISO mounting flanges and ports · full-power thru-drive capability.
How to Read a Parker P1 Model Code — Including Seal Material ID
Type P = open-circuit, variable displacement
Displacement 075 75 cc/rev · 100 100 cc/rev · 140 140 cc/rev
Shaft options 01 SAE spline · 03 ISO/DIN spline
Rotation R clockwise · L counterclockwise (from shaft end)
Mounting / ports S SAE inch · A SAE inch/BSPP · M ISO metric · B ISO/BSPP
Seal material 5 = Fluorocarbon (Viton)
Controls C0/C1 pressure limiter · L0/L1 load sensing + pressure limiter · RN/RH/RM/RE pilot-operated controls
🔎 Buna or Viton on a P1? The seal-material position of the model code tells you — on the P1, code 5 = Fluorocarbon (Viton). Matching seals to your fluid matters on a rebuild: Viton for high temperatures or aggressive fluids, Buna-N (Nitrile) for standard petroleum oil. If your nameplate is worn, send us your fluid type and operating temperature and we'll confirm the correct seal kit.
How to Identify Your P1 Pump
Find the full model code stamped on the pump nameplate or housing tag — it starts with P1 followed by the displacement (075/100/140) and option codes. To get the right parts, send us:
  1. The complete model code from the nameplate (or a clear photo of it).
  2. Your fluid type and operating temperature (so we confirm Buna-N vs Viton seals).
  3. What you need — seal kit, rotating group, control, or complete pump.
Get a quote on Parker P1 parts
Send us your model code and we'll source the correct parts and price them for you. Request a P1 Quote → info@restopower.com | (810) 882-1171 | Request a Quote
Frequently Asked Questions
What is a Parker P1 piston pump?

A variable displacement axial piston pump for open-circuit mobile and industrial use, rated to 280 bar (4000 PSI) continuous. Offered as P1075 (75 cc/rev), P1100 (100 cc/rev) and P1140 (140 cc/rev).

How do I read a Parker P1 model code?

It begins with P (open-circuit variable displacement), then displacement (075/100/140), shaft, rotation (R/L), mounting & ports, seal material, and control. On the P1, seal code 5 = Fluorocarbon (Viton).

How do I know if my P1 has Buna or Viton seals?

Check the seal-material position of the model code — on the P1, code 5 is Fluorocarbon (Viton). If the nameplate is unreadable, send us your fluid and operating temperature and we'll confirm the correct seal material.

Can RestoPower source obsolete Parker P1 parts?

Yes — sourcing hard-to-find and obsolete Parker piston pump parts is our specialty. Send us the full model number from your P1 nameplate and we'll locate the correct parts and quote them.

We Buy Cores

Have a used Parker P1 piston pump in any condition? We buy hydraulic cores — get cash back fast.

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