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NAICS Code· 336311

NAICS 336311: Carburetor, Piston, Piston Ring, and Valve Manufacturing

NAICS 336311 - Carburetor, Piston, Piston Ring, and Valve Manufacturing covers the production of critical internal combustion engine components. This industry focuses on the precision machining and fabrication of engine parts essential for fuel delivery and combustion, including pistons, rings, and valves.

13
Active Contracts
2
Median Bidders per Award
+0.0%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 336311.

AI Industry Description

NAICS 336311 - Carburetor, Piston, Piston Ring, and Valve Manufacturing covers the production of critical internal combustion engine components. This industry focuses on the precision machining and fabrication of engine parts essential for fuel delivery and combustion, including pistons, rings, and ...

NAICS 336311 - Carburetor, Piston, Piston Ring, and Valve Manufacturing covers the production of critical internal combustion engine components. This industry focuses on the precision machining and fabrication of engine parts essential for fuel delivery and combustion, including pistons, rings, and valves. In the government contracting landscape, these components are vital for maintaining a diverse fleet of tactical and non-tactical vehicles, aircraft, and specialized machinery. Pioneer Industries, LLC is a prominent contractor operating within this sector, providing the specialized manufacturing capabilities required to meet government specifications. The Department of Defense is the primary driver of demand in this sector, indicating that procurement is heavily centered on military readiness, vehicle maintenance, and the sustainment of defense-related propulsion systems.

Competition

How many companies historically bid on federal awards in NAICS 336311, from bidder counts reported on USAspending.

Fewer Bidders

Median under 3 bidders per reported award. · 24,740 reported awards

Median Bidders

2

Per reported award, all-time

Single-Bid Awards

29%

Share of reported awards with one bidder

10+ Bidder Awards

9%

Share of reported awards with 10+ bidders

Reported Awards

0

100% of 24,782 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
336311This Code
Carburetor, Piston, Piston Ring, and Valve Manufacturing
Fewer Bidders229%
24,740100% of 24,782
33631NAICS Industry
Crowded Field11112%
162,44496% of 168,827
3363Industry Group
Motor Vehicle Parts Manufacturing
Moderate Competition325%
451,33389% of 504,695
336Subsector
Fewer Bidders238%
2,927,90480% of 3,665,512
33Sector
Manufacturing
Fewer Bidders244%
16,883,00469% of 24,369,785

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Carburetor, Piston, Piston Ring, and Valve Manufacturing, by shared sector, subsector, and industry group.

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NAICS 336311 FAQ

Frequently Asked Questions

NAICS code 336311 stands for Carburetor, Piston, Piston Ring, and Valve Manufacturing. It is a North American Industry Classification System code used by the federal government to classify business activity for procurement and contracting purposes.

Recently Posted in Carburetor, Piston, Piston Ring, and Valve Manufacturing

NAICS: 336311
New
SLED
Supply of MY27 Command Operations VehiclesThis subcontract involves the supply of two Model Year 2027 Command Operations Vehicles for Iowa DAS Fleet Services projects. The requirement specifies the delivery of one 4x2 standard wheelbase vehicle and one 4x2 extended wheelbase vehicle, both of which must meet the COV 1-4 Specifications Worksheet. These vehicles are intended to be Model Year 2027 Jeep Grand Wagoneers or an approved equivalent to ensure full compliance with the project's operational needs. The contract mandates the delivery of both fully compliant vehicles to either the prime dealership or the Iowa DAS Fleet location in Des Moines, Iowa. The procurement process is managed by the state of Iowa, with a posting date of September 25, 2026, and a response deadline set for October 9, 2026. This agreement is categorized under NAICS code 336311, focusing on the specialized automotive manufacturing and supply requirements for state-level fleet operations.
Iowa

POSTED

1 day ago

DEADLINE

in 12 days
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NAICS: 336311
New
Valve Component and Seal SupplyThis subcontract for the Department of the Navy, managed by Navsup Weapon Systems Support Mech, focuses on the supply of replacement parts, seals, gaskets, and internal components for valve repair projects. The contractor is responsible for manufacturing or sourcing valve internals using specialized elastomers and high-grade alloys that adhere to strict government specifications. All deliverables must include new replacement parts and the necessary material certifications. The contract requires full compliance with DFARS 252.225-7036 regarding Buy American and Free Trade Agreements. Performance of these services is centered in Mechanicsburg, Pennsylvania, under NAICS code 336311. The solicitation was posted on September 25, 2026, with a response deadline of October 26, 2026.
Navsup Weapon Systems Support Mech

POSTED

2 days ago

DEADLINE

in 29 days
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NAICS: 336311
New
DIBBS
Supply of Diesel Engine Cylinder Heads (NSN 2815013234388)This subcontract involves the supply of five diesel engine cylinder heads under NSN 2815013234388 for prime contractors supporting Department of Defense supply contracts. The agreement specifically prohibits the use of additive manufacturing or 3D printing in the production of these units. The supplier must ensure all items are packaged according to RP001 and marked in compliance with MIL-STD-129, while adhering to the DLA Master List of Technical and Quality Requirements. All five units must be delivered to the designated destination by the specified deadline.
LAND SUPPLIER OPNS VEHICLE SPT

POSTED

3 days ago

DEADLINE

in 8 days
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NAICS: 336311
New
DIBBS
Outboard Engine SupplierThis subcontract opportunity, issued by the Department of Defense under the Land Supplier Opns Engines agency, seeks a Women-Owned Small Business to supply a complete outboard engine for prime contractors on DLA supply contracts. The selected provider must procure or manufacture engines that adhere to the DLA Master List of Technical and Quality Requirements, ensure marking compliance with MIL-STD-129, and follow DFARS 252.223-7008 regulations regarding hexavalent chromium. The contract requires strict adherence to DFARS 252.204-7012 cybersecurity standards. The final deliverable consists of one marked and packaged outboard engine to be delivered to New Cumberland, Pennsylvania. Responses for this NAICS 336311 requirement are due by October 5, 2026.
LAND SUPPLIER OPNS ENGINES

POSTED

4 days ago

DEADLINE

in 8 days
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NAICS: 336311
New
DIBBS
Manufacturing of Internal Combustion Engine Pistons (NSN 2815-01-350-7027)This subcontract involves the manufacture of two high-precision internal combustion engine pistons under NSN 2815-01-350-7027 for the Department of Defense, specifically the Land Supplier Operations Vehicle Support agency. The production process requires the use of CNC machining, grinding, and honing to meet strict RA001 technical requirements and NAVSEA 5100-003D mercury restrictions. All finished components must be inspected and packaged according to RP001 standards before delivery. The project falls under NAICS code 336311 and is scheduled for a response deadline of October 1, 2026. Performance of the contract will take place at FPO 96672. The primary objective is to provide these specialized components to prime contractors fulfilling DLA supply contracts.
LAND SUPPLIER OPNS VEHICLE SPT

POSTED

6 days ago

DEADLINE

in 4 days
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NAICS: 336311
Closed
Federal
Outboard Engine Supply and InstallationThis subcontract, managed by the Department of Homeland Security through the Fletc Charleston Procurement Office, involves the supply and installation of a twin outboard engine propulsion system for a US Coast Guard vessel. The project requires the provision and mounting of twin 4.3L Offshore F350 Hp Yamaha outboard engines, featuring 25 inch shafts and stainless steel props, all installed according to factory rigging standards to ensure the system is fully operational. The contract is designated as a total Small Business Set Aside under NAICS code 336311, with performance taking place in North Charleston, South Carolina. Interested parties must respond by September 22, 2026, to meet the procurement requirements for this specialized maritime installation.
Fletc Charleston Procurement Office

POSTED

9 days ago

CLOSED

5 days ago
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NAICS: 336311
Federal
Marine Propulsion & Engine SupplyThe Marine Propulsion and Engine Supply subcontract, managed by the Department of Homeland Security's Sflc Procurement Branch 1, involves the supply and installation of critical ship components including main engines, propulsion shafts, propellers, and auxiliary power units. The scope of work encompasses engine mounting, shaft alignment, and the full commissioning of propulsion systems for prime contractors engaged in shipbuilding and repair projects. This opportunity is categorized under NAICS code 336311 and is slated for performance in Fort Pierce. The solicitation was posted on September 18, 2026, with a response deadline set for October 2, 2026.
Sflc Procurement Branch 1(00080)

POSTED

9 days ago

DEADLINE

in 5 days
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NAICS: 336311
Axial Piston Pump Replacement Parts SupplyThis subcontract with the Department of the Navy, specifically Navsup Weapon Systems Support Mech, involves the supply of internal components, seals, and precision-machined parts for Axial Piston Pump overhauls. The scope of work includes the manufacture of high-precision pistons, cylinders, and valve plates using high-grade alloys and industrial-grade seals that conform to Reference Number 847275. These parts are intended for use by prime contractors on U.S. Navy projects, with the requirement to provide Unique Item Identifiers for any items valued over 5,000 dollars. The contract is categorized under NAICS code 336311 and is centered in Mechanicsburg, Pennsylvania. The solicitation was posted on September 18, 2026, with a response deadline of October 5, 2026. The provider is responsible for delivering either new or refurbished internal pump components to support the maintenance of NIIN 012272677.
Navsup Weapon Systems Support Mech

POSTED

9 days ago

DEADLINE

in 8 days
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NAICS: 336311
DIBBS
Supply of Engine Crankshafts (NSN 2815011489535)This subcontract involves the supply of 21 engine crankshafts for GMC 6.2 engines to support prime contractors on DLA supply contracts. The required parts must match AM General part number 5740034 or GM part number 23500246, identified by NSN 2815011489535. All units are to be delivered to the DLA Distribution DDSP New Cumberland Facility. The contract mandates strict adherence to packaging and labeling standards, including ASTM D3951 for packaging, MIL-STD-129 for marking, and RP001 for palletization. Additionally, the supplier must comply with the Hazard Communication Standard 29 CFR 1910.1200. This opportunity is designated as a Total Small Business Set-Aside under NAICS code 336311 for the Department of Defense.
LSO COMBAT VEHICLES AND ARMAMENT

POSTED

10 days ago

DEADLINE

in 1 day
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NAICS: 336311
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Federal
Submersible Outboard Motor Manufacturing & Re-ManufacturingThis subcontract with the Department of Homeland Security involves the manufacture and delivery of six 65 HP, 2-stroke, 3-cylinder, multi-fuel submersible and de-watering outboard motors for Regional Dive Locker projects. The project requires the re-manufacturing of core engines at a United States facility to meet specific submersible standards, including a maximum dry weight of 200 lbs and compliance with DFARS 252.225-7013 regarding foreign core engines. The contract is designated as a total Small Business Set Aside under NAICS code 336311 and is managed by the LOG-9 agency. Performance of the contract will take place in Portsmouth, Virginia. The solicitation was posted on September 17, 2026, with a response deadline of September 24, 2026.
LOG-9

POSTED

10 days ago

CLOSED

3 days ago
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NAICS: 336311
International
Fire Service Vehicle Upfitting and AccessoriesThis subcontract for Fire Service Vehicle Upfitting and Accessories involves performing modifications and installing specialized equipment for prime contractors on City of Maple Ridge Fire and Rescue Services projects. The scope of work includes the installation of firefighting equipment, storage bins, and communication gear, as well as heavy-duty off-road modifications such as brush guards and reinforced suspensions. All deliverables must be ready for emergency service deployment and strictly adhere to CSA standards and the BC Motor Vehicle Act. The opportunity was posted on September 11, 2026, with a response deadline of October 5, 2026. Classified under NAICS code 336311, the contract is managed by the City of Maple Ridge.
City of Maple Ridge

POSTED

16 days ago

DEADLINE

in 8 days
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NAICS: 336311
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DIBBS
Nickel-Cadmium Storage Battery SupplyThis subcontract with the Defense Logistics Agency involves the supply of 100 nickel-cadmium wet, discharged, spillable storage batteries for prime contractors. The provider is responsible for manufacturing or sourcing batteries that meet part number 6140-01-241-2296, ensuring a Type 1 shelf life of 36 months. Compliance requirements include the provision of Material Safety Data Sheets and adherence to Federal Standard 313. The contract falls under NAICS code 336311 and was posted on September 10, 2026, with a response deadline of September 17, 2026.
Defense Logistics Agency

POSTED

17 days ago

CLOSED

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