PSC 2850

Overview

The Product Service Code (PSC) system is the U.S. government’s standardized taxonomy for identifying what the government buys. Agencies assign PSCs in FPDS and SAM.gov to classify contract actions by the predominant product or service, enabling consistent reporting, analysis, and category management; the taxonomy is maintained through the PSC Manual issued by GSA. ¹

Within Federal Supply Group 28 (Engines, Turbines, and Components), PSC 2850 is defined as “Gasoline Rotary Engines and Components.” The April 2025 PSC Manual lists the title for 2850 but provides no additional “Includes/Excludes.” Related classes in Group 28 delineate gasoline reciprocating engines (2805), aircraft engine classes (2810 and 2840), and engine accessories in Group 29 (e.g., 2910, 2920, 2930, 2940, 2990). Selection of 2850 in FPDS should reflect the predominance of gasoline rotary engine items in the award. ¹

• See also on G2X:
  • G2X — PSC 2850 overview
  • G2X — PSC 2805
  • G2X — PSC 2835

What this PSC covers

• Gasoline rotary engines as end items when they are the predominant deliverable on the contract action. ¹
• Components of gasoline rotary engines when not more specifically classifiable as engine accessories in Group 29. ¹
• Coding that is distinct from gasoline reciprocating engines, which are classified under 2805. ¹
• Awards where aircraft prime-mover engines are not the subject; these have dedicated aircraft classes such as 2810 and 2840. ¹
• Exclusion of fuel, electrical, cooling, filtration, turbosupercharger, and miscellaneous engine accessories that are classified under 2910, 2920, 2930, 2940, 2950, or 2990 as applicable. ¹
• Specific examples of included components: Not specified by official sources ¹.

Related NAICS and PSC codes

The codes below delineate adjacent scope in Group 28 per the PSC Manual. ¹

Type	Code	Descriptor
PSC	2805	Gasoline Reciprocating Engines, Except Aircraft; and Components.
PSC	2810	Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components.
PSC	2835	Gas Turbines and Jet Engines; Non‑Aircraft Prime Mover, Aircraft Non‑Prime Mover, and Components.
PSC	2895	Miscellaneous Engines and Components.

Boundary with engine accessories (Group 29)

• The PSC Manual notes that, unless specifically excluded, engine accessories for all vehicle types and stationary engines are classified in Group 29. Use accessory classes such as 2910, 2915, 2920, 2925, 2930, 2935, 2940, 2945, 2950, 2990, or 2995 rather than 2850. ¹

FPDS reporting considerations

• The PSC is reported in FPDS as data element 8A and should reflect the predominant product purchased; environmental attributes (data element 8L) may be reported when applicable per PSC Manual guidance. ¹

Frequently asked questions

• What does PSC 2850 include?
  PSC 2850 is titled “Gasoline Rotary Engines and Components.” The Manual does not provide detailed “Includes/Excludes” beyond the title; apply Group 28/29 boundaries to distinguish complete engines from accessories. Not specified by official sources ¹.

• How is PSC 2850 different from PSC 2805?
  2850 covers gasoline rotary engines, while 2805 covers gasoline reciprocating engines (except aircraft) and their components. Choose the class that matches the engine type, not the end application, unless an aircraft‑specific class applies. See also on G2X: PSC 2805. ¹

• Should engine accessories be coded under PSC 2850?
  Generally no. Fuel, electrical, cooling, filtration, turbosupercharger, and miscellaneous accessories are coded in Group 29 (e.g., 2910, 2920, 2930, 2940, 2950, 2990) rather than 2850. ¹

• Does PSC 2850 apply to aircraft engines?
  Aircraft prime‑mover gasoline engines and gas turbines use dedicated aircraft classes (2810 and 2840), with aircraft‑specific accessories in 2925, 2935, 2945, and 2995. The Manual does not state additional aircraft applicability for 2850. ¹

• Is there an official PSC‑to‑NAICS crosswalk for PSC 2850?
  Not specified by official sources ¹. Agencies assign NAICS independently for each procurement and report PSC and NAICS concurrently in FPDS/SAM.gov according to standard data elements. ¹

Useful resources

• G2X — PSC 2850 overview
• Product and Service Code (PSC) Manual — official portal (current editions, SOP, and downloads): https://www.acquisition.gov/psc-manual

References

1. Product and Service Code (PSC) Manual — official portal, Acquisition.gov: https://www.acquisition.gov/psc-manual