Federal Appeals Court Pauses Ruling Against Trump 10% Tariffs

Will the 10% tariff on imported truck parts stay in place?

Yes, for now. A federal appeals court issued a temporary stay on May 12, pausing a lower-court ruling that had declared President Trump's 10% global tariffs unlawful. The stay keeps the tariffs active while the appeal is considered, meaning importers of truck chassis, axles, engines, and aftermarket parts remain liable for the 10% levy on goods entering the U.S.

The ruling affects every fleet that sources components from overseas suppliers — OEM replacement parts, trailer axles, Chinese-made brake drums, Mexican-assembled wiring harnesses. The 10% tariff applies at the border, and importers typically pass the cost downstream to distributors, shops, and ultimately fleet maintenance budgets.

What the stay means for parts pricing

The temporary stay leaves pricing uncertainty in place. Fleets that deferred parts orders hoping the lower-court ruling would eliminate the tariff now face the same 10% surcharge they've been paying since the tariff took effect. Distributors who had begun adjusting price sheets downward after the initial ruling may reverse course.

For a small fleet ordering a replacement Meritor axle assembly from a Mexican plant, the 10% tariff adds roughly $400 to $600 per unit depending on spec. Multiply that across a trailer refresh cycle and the cost compounds quickly. Shops stocking Chinese-made brake components, wheel-end parts, and lighting assemblies see the tariff embedded in every invoice.

How long the appeal will take

The appeals court did not set a timeline for its decision. Federal appeals on trade-law questions typically take months — oral arguments, briefs, and a written opinion. Until the court rules, the tariffs remain enforceable.

Fleets that filed for refunds under the tariff refund portal that opened May 11 are in limbo. The portal allows importers to claim refunds on tariffs paid if the lower-court ruling ultimately stands, but the stay means no refunds will be processed until the appeal concludes. Importers who submitted claims on truck chassis, axles, and parts face an indefinite wait.

What this costs a small fleet

A five-truck operation that replaces two trailer axle sets per year and orders $8,000 in Chinese-made brake and wheel-end parts annually pays an extra $1,000 in tariffs under the 10% levy. For a 25-truck fleet running cross-border into Mexico, the tariff hits harder — Mexican-assembled wiring harnesses, lighting assemblies, and suspension components all carry the surcharge. Annual parts spend of $50,000 becomes $55,000.

OEM suppliers have absorbed some of the tariff cost to keep pricing competitive, but most have passed it through. Meritor, SAF-Holland, and Hendrickson all adjusted price sheets upward when the tariff took effect. The stay ensures those adjustments remain in place.

What happens if the appeal reverses the lower-court ruling

If the appeals court sides with the Trump administration and upholds the tariffs, the 10% levy becomes permanent unless Congress acts or a future administration repeals it. Fleets would need to budget the surcharge into long-term parts-replacement planning. Shops would see the tariff embedded in distributor pricing indefinitely.

If the appeals court affirms the lower-court ruling and strikes down the tariffs, importers who paid the 10% levy and filed refund claims would receive payments. The timeline for processing those refunds would depend on Customs and Border Protection's capacity to handle the volume — early reports from the May 11 portal launch showed system delays and incomplete claim forms.

What fleets should do now

Budget the 10% tariff into parts orders until the appeal concludes. Do not defer critical maintenance hoping for a favorable ruling — the stay could remain in place for months. If you import parts directly, file a refund claim through the portal even though processing is paused. The claim establishes your place in line if refunds eventually proceed.

For fleets considering Chinese EV and parts plants in Mexico as sourcing alternatives, the tariff applies to Mexican imports as well. Shifting suppliers does not eliminate the 10% levy under the current structure. The only way to avoid the tariff is to source from domestic manufacturers, which typically carry a higher base price that offsets any tariff savings.