# Amendments to Regulations for Heavy-Duty Diesel Engines
> **Rule** · Direct final rule. · Published 2006-08-30 · Effective 2006-10-30 · 71 FR 51481
## Document
- **Document number:** E6-14429
- **Category:** other
- **Federal Register citation:** 71 FR 51481
- **CFR reference:** 40 CFR 9
- **Publication date:** 2006-08-30
- **Effective date:** 2006-10-30
- **EPA docket:** EPA-HQ-OAR-2005-0474
## Abstract

In a rule published January 18, 2001, EPA promulgated several new standards for heavy-duty highway diesel engines and vehicles beginning in model year 2007. In this rulemaking we are making some technical amendments to the regulations to correct typographical errors, revise references, remove old provisions, and to revise some provisions regarding deterioration factors to be identical to those for nonroad diesel engines certified under the Tier 4 rule, published June 29, 2004.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2006/08/30/E6-14429/amendments-to-regulations-for-heavy-duty-diesel-engines)
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