---
kind: "section"
citation: "40 C.F.R. § 85.2118"
title: "40"
number: "85.2118"
heading: "Changes after certification."
url: "https://uscodex.org/cfr/40/85.2118"
---

# §85.2118. Changes after certification.


The aftermarket part manufacturer shall be required to recertify any part which:

- (a) Was certified pursuant to [§ 85.2114(b)](/cfr/40/85.2114.md?p=b) and to which modifications are subsequently made which could affect the results of any test or judgment made that the part meets all of the applicable Emission-Critical Parameters;
- (b) Was certified pursuant to [§ 85.2114(c)](/cfr/40/85.2114.md?p=c) and to which modifications are made which are likely to affect emissions or the capability of the part to meet any other requirement of this subpart; or
- (c) Was certified and is subsequently modified in a manner affecting the durability of the part or any emission control device, engine or the vehicle upon which such part is installed.

## Notes

### Amendments

[45 FR 78461, Nov. 25, 1980, as amended at 54 FR 32593, Aug. 8, 1989]

### Authority

Authority: Secs. 203, 207, 208, and 301(a), Clean Air Act, as amended (42 U.S.C. 7522, 7541, 7542, and 7601(a)).

### Source

Source: 45 FR 34839, May 22, 1980, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Amendments

[45 FR 78461, Nov. 25, 1980, as amended at 54 FR 32593, Aug. 8, 1989]