PHIN · CIK 1968915
What Phinia Inc. told the SEC could break it.
Phinia's disclosures cluster on the cost and customer side of a metal-intensive auto-parts business. Its fuel-injection and aftermarket components run on steel, aluminum and copper, and it has seen energy and base-metal prices rise while its customer pricing agreements recover less than 100% of those increases — the same limited-pass-through dynamic that runs through its tariff exposure, where suppliers are adding tariff surcharges and 2025 'tariff cost and recovery' was margin-dilutive in Aftermarket. Those costs sit on top of customer concentration: General Motors was about 18% of 2025 net sales, its only customer above 10%, with the top five at 37%.
3 self-disclosed vulnerabilities, pulled from its own filings, each in the company’s words, with the source. This is the risk register almost nobody reads.
In its own words
What could break it.
Commodity & input dependence
- Base-metal & energy input costs (steel, aluminum, copper); limited customer pass-throughmedium
Phinia's fuel-injection and aftermarket components are metal-intensive, and it has experienced price increases for energy and base metals such as steel, aluminum and copper. While it has pricing-related agreements with various customers, those agreements do not let it recover 100% of increased costs, so sustained metal/energy inflation that outpaces recovery compresses operating margins. A core manufacturing commodity-cost exposure.
“the Company has experienced price increases for energy and base metals (such as steel, aluminum and copper).”
SEC filing →As of 2026
Customer concentration
- General Motors = 18% of net sales (2025); top-5 customers = 37%medium
Phinia's fuel-systems business is concentrated in a few automakers: General Motors (incl. subsidiaries) was ~18% of consolidated net sales in 2025 (17% in 2024, 16% in 2023) — the only customer above 10% — and its top-five customers were 37% of 2025 sales. Products are sold to OEMs under negotiated annual contracts/long-term supply agreements, so a GM program loss, build-rate decline, or insourcing decision would have an outsized effect. The named GM relationship is captured as a supply edge; this records the broader concentration including unnamed top-five customers.
“Sales to the Company's top five customers represented 37% of sales for the year ended December 31, 2025.”
SEC filing →As of 2026
Regulatory & policy
- Tariffs — quantified tariff cost-and-recovery (margin-dilutive), supplier tariff surcharges, US-China trade & rare-earth controlsmedium
Tariffs flow through Phinia's results: its 2025 segment bridges show 'Tariff cost and recovery' adding ~$13M (Fuel Systems) and ~$25M (Aftermarket) to net sales while diluting Aftermarket operating margin (it recovers tariff costs from customers as pass-through, which is margin-dilutive). Suppliers have sought price increases to offset tariff-driven costs, and Phinia's ability to pass these through to customers is limited (often <100% and delayed). It also flags US-China trade uncertainty, including rare-earth-related controls and trade restrictions. While 2025 tariffs were not yet material to the business overall, the channel is active and quantified.
“suppliers have sought to increase prices in order to offset inflationary and other costs and surcharges, including the impact of tariffs.”
The hidden graph
Who it depends on, and who depends on it.
Relationships surfaced from filings, including ones disclosed by the other side, which is how the non-obvious ones come to light.
Its customers
“The Company's worldwide net sales to General Motors Company during the years ended December 31, 2025, 2024, and 2023 were 18%, 17% , and 16%, respectively.”
Cited →“The Company's worldwide net sales to General Motors Company during the years ended December 31, 2024, 2023, and 2022 were 17%, 16% , and 12%, respectively.”
Cited →
Its suppliers
“We are the trusted source of these products for many of the world's largest automotive parts manufacturers, including PHINIA Inc. (previously part of BorgWarner Inc.), A. Kayser Automotive System GmbH, Korea Fuel-Tech Corporation,”
Cited →
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