401(k) · DOL Form 5500 · 2023

Tenneco Automotive Operating Company Inc. 401(k) Plan

Data updated 2026-08-06

$1.8B
Total assets: 14,522
Participants: 99th
Percentile by assets: $124,053
Avg per participant

Official DOL plan name: Tenneco 401(k) Investment Plan · Sponsored by Tenneco Automotive Operating Company Inc. · Michigan · Manufacturing

$1.8B in assets, 14,522 participants

Tenneco Automotive Operating Company Inc.'s Tenneco 401(k) Investment Plan reported $1.8B in total assets and 14,522 participants in its 2023 DOL Form 5500 filing, ranking in the 99th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

99th percentile by assets (of 126,618 plans)
#18,400 in Manufacturing (18,672 peers)

Coverage in Michigan

Tenneco 401(k) Investment Plan covers 14,522 participants in Michigan, 23x the typical Michigan plan (state average ~632 per filing). Assets: $1.8B.

$1.8B
total plan assets (2023 EOY): 14,522
covered participants: 99th
percentile by assets (of 126,618 plans): $124,053
avg assets per participant

Tenneco 401(k) Investment Plan reported net income rose from -$252M in the plan year 2022 filing to $141M in the plan year 2023 filing.
Tenneco 401(k) Investment Plan reported participants rose from 6,681 in the plan year 2022 filing to 14,522 in the plan year 2023 filing.
Tenneco 401(k) Investment Plan end-of-year assets rose from $1.7B in the plan year 2022 filing to $1.8B in the plan year 2023 filing.

See the national 2023→2024 release diff →

State

Michigan

Industry

Manufacturing

Participants vs Michigan filers

In Michigan, the average filing covers about 632 participants across 3,963 plans. Tenneco 401(k) Investment Plan reports 14,522 participants - 23x that state average ($1.8B EOY assets).

Michigan filing particulars

Total Assets (Beginning of Year)	$1.7B
Net Assets (End of Year)	$1.8B
Net Income	$141M
Employer EIN	741933558
Plan Effective Date	2002-11-25
Filing Status	FILING RECEIVED

Sponsor Plan History (Tenneco Automotive Operating Company Inc.)

Total plan assets by year, all Tenneco Automotive Operating Company Inc. plans on file

Year	Plans	Participants	Total Assets
2022	2	8,439	$1.7B
2023	1	14,522	$1.8B
2024	1	13,299	$1.8B

Nearby 401(k) Plans in Michigan

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Tenneco 401(k) Investment Plan vs. nearby 401(k) plans in Michigan, assets vs. participants

General Motors Retirement Savings Plan for Salaried Employees in the United States $20.4B · 47,299
Ford Motor Co. Savings and Stock Investment Plan for Salaried Employees $15.6B · 30,516
The Dow Chemical Company Employees' Savings Plan $10.1B · 18,088
The General Motors Personal Savings Plan for Hourly-Rate Employees in the United States $8.6B · 40,393
Ford Motor Co. Tax-Efficient Savings Plan for Hourly Employees $7.6B · 59,195

Compare Tenneco 401(k) Investment Plan side-by-side with 3 peers →

Scale composition for Tenneco 401(k) Investment Plan

Tenneco 401(k) Investment Plan reports $1.8B in end-of-year assets across 14,522 participants (0.015% of the $11.6T held by all Form 5500 filers in the national rollup , and 0.016% of 89,805,449 covered participants) - about $124,053 per participant (91% of the national average assets-per-participant) . Net income for plan year 2023 was $141M.

This plan identity (EIN 741933558, plan #144) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $1.7B to $1.8B (+9.5%) while covered participants moved from 6,681 to 13,299 . Single-year sparse filers cannot show that trail.

Plan year	Participants	EOY assets	Filing
2022	6,681	$1.7B	Open filing
2023	14,522	$1.8B	This page
2024 · index core	13,299	$1.8B	Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Tenneco 401(k) Investment Plan (401(k), $1.8B, 13,299 participants)

Similar-Sized 401(k) Plans Nationally

401(k) plans in other states closest to Tenneco 401(k) Investment Plan by total assets, not by location.

Zoetis Savings Plan (NJ) $1.8B · 6,905
Dassault Systemes Employee Savings Plan Plus (MA) $1.8B · 5,925
Syngenta Corporation Investment Savings Plan (NC) $1.8B · 4,226
Reyes Holdings Retirement Plan (IL) $1.8B · 32,089

Frequently Asked Questions

How did Tenneco 401(k) Investment Plan assets move in 2023? ▼

Tenneco 401(k) Investment Plan grew at a solid clip - up 8.5% during 2023, from $1.7B to $1.8B. Reported net income was $141M.

How have Tenneco Automotive Operating Company Inc. plan assets changed over time? ▼

Across 3 plan years on file (2022-2024), Tenneco Automotive Operating Company Inc.'s sponsor-wide assets grew 9.5%, from $1.7B to $1.8B.

Where does Tenneco 401(k) Investment Plan rank by assets among Form 5500 filers? ▼

Tenneco 401(k) Investment Plan ranks in the 99th percentile by end-of-year assets among 126,618 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).

Which 401(k) plans are similar in size to Tenneco 401(k) Investment Plan? ▼

Among 401(k) plans in other states, the closest by assets is Zoetis Savings Plan in NJ ($1.8B, 6,905 participants).

Next read for Tenneco 401(k) Investment Plan

Filing takeaways

Ways to act on Tenneco 401(k) Investment Plan's numbers.

By total assets, Tenneco 401(k) Investment Plan ranks among the largest 1% of all filed plans. See the largest plans
Compare it side-by-side against 3 similar 401(k) plans in Michigan. Compare plans
Tenneco Automotive Operating Company Inc.'s sponsor-wide assets have grown 9.5% since 2022 across 3 plan years on file. More Manufacturing plans

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 741933558.