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Vehicle and Engine Certification
Contact Us

Transition Program for Equipment Manufacturers (TPEM)

  • TPEM
  • TPEM Hardship Relief
Related Topic
  • Certification and compliance for nonroad vehicles & engines 
On this page:
  • Overview
  • Who can participate
  • Regulatory requirements
  • Application and reporting steps for equipment manufacturers and importers
  • Recordkeeping and reporting steps for engine manufacturers
  • Additional tips and tools
  • TPEM help desk

Overview

Help
  • Overview of TPEM

The Transition Program for Equipment Manufacturers, better known as “TPEM” or “flexibility program,” is a temporary exemption that allows diesel equipment manufacturers to delay installing Tier 4-compliant engines in their products for up to seven years.

TPEM was created in response to equipment manufacturers’ concerns that engine manufacturers would not provide sufficient notice of possible changes in engine design stemming from tighter standards. Therefore, they would not be able to make the necessary adjustments to their equipment to accommodate these design changes within the timeframe provided by the regulations.

Many TPEM participants are small businesses.

Participants must comply with certain production limitations and paperwork requirements.


Who can participate

Help
  • Eligibility Requirements
TPEM is only available to diesel equipment manufacturers that:
  • Have primary responsibility for designing and manufacturing their own equipment, AND
  • Install the engine(s).

Companies that import TPEM equipment into the U.S. but do not manufacture equipment do not qualify to participate in TPEM on their own. They can only participate as an importer by bringing equipment into the US that is exempted under an equipment manufacturer’s valid exemption.


Regulatory Requirements for TPEM

There are different requirements for:
  • Equipment manufacturers
  • Importers
  • Engine manufacturers

Application and Reporting Steps for Equipment Manufacturers and Importers

STEP 1: Review the applicable requirements, choose your allowance, and plan out your TPEM participation.
  • Regulatory requirements for equipment manufacturers
  • Regulatory requirements for importers
Help
  • Tips for using and submitting completed documents
STEP 2: Before you use any TPEM allowances, apply by downloading and completing the applicable template below.
  • Notification template to apply for TPEM
  • Importers must submit additional information. Refer to the regulations for more information.
STEP 3: Submit your completed notification and any other applicable information to EPA.
  • Contact information for TPEM

STEP 4: When ordering engines, provide the engine manufacturer with written assurance that the engines will be used under TPEM.

STEP 5 (IMPORTERS ONLY): Before importing your TPEM equipment, post a bond or apply for a bond waiver.
  • Bond form for importers
    Use this form to calculate the size of the bond or apply for a waiver.
  • Bonding requirements
STEP 6: Keep adequate production records for all exempted equipment.
  • Notification, reporting, and recordkeeping requirements
STEP 7: Download and complete the annual report template.
  • Annual report template for equipment manufacturers
STEP 8: Submit annual reports by March 31 of the year after you use TPEM allowances.
  • Contact information for TPEM

Recordkeeping and Reporting Steps for Engine Manufacturers

Help
  • Tips for using and submitting completed documents
STEP 1: Keep adequate production and sales records.
  • Notification, reporting, and recordkeeping requirements
STEP 2: Download and complete the annual report template.
  • Annual report template for equipment manufacturers
STEP 3: Submit annual reports by March 31 of the year after you use TPEM allowances.
  • Contact information for TPEM

Additional Tools and Tips

  • Tips for using and submitting completed documents
  • Frequent compliance issues in TPEM

Help
  • Frequent compliance issues in TPEM

TPEM Help Desk

For questions about TPEM, contact the help desk.
  • Email: TPEM-CI@epa.gov
  • Phone: 734-214-4100
  • Certification & Compliance for Vehicles & Engines Home
  • Onroad
  • Nonroad
  • EV-CIS
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on June 27, 2022
United States Environmental Protection Agency

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