Auto parts are among the goods most exposed in the current tariff era, because a large share of the catalog is sourced from China and the parts that carry the most trade-remedy exposure are often the high-turnover ones merchants reorder constantly. The base duty on a chapter 87 part is generally modest, but it does not always arrive alone, and add-on rates can, depending on origin, turn a thin reseller margin negative on a single replenishment. If you sell brake pads, filters, sensors, or trim sourced overseas, the landed cost you priced against earlier may differ from what you pay today, so it is worth re-checking before you reorder.
Representative 2026 estimate stacking base MFN duty (USITC HTS 2026 Rev.10), Section 301 on China-origin goods (USTR), Section 232 on autos and steel/aluminum/copper articles (CRS IN12545), and the 10% Section 122 surcharge that expires 2026-07-24 and is under appeal (Skadden). Your exact per-SKU duty depends on the precise HS code, which MarginGuard resolves from the live HTS schedule once connected. Not legal or customs advice.
Cambodia is a long-standing low-cost manufacturing base whose exports to the US now carry a reciprocal-era tariff load on top of the normal HTS base duty set by each product's classification. That stacking matters for landed cost: the country-specific load can apply on top of the base rate across many categories, so the duty you pay may no longer be just the historic base rate for your goods, though the exact treatment still depends on your product's HS code. Cambodia has no comprehensive US free trade agreement, so there is no across-the-board duty preference to fall back on, and the representative stacked rate in the box above reflects the current-era treatment. Because rates in this era are set largely through policy action and have been adjusted on short timelines, the number can change between order cycles, so treat it as a snapshot rather than a fixed input.
Cambodia is a genuine China alternative for apparel and footwear and a common first stop when diversifying out of China, but it is not a duty-free escape hatch. It carries its own reciprocal-era load, so the right comparison is Cambodia's stacked rate against China's stacked rate for your specific HS codes, not Cambodia against a pre-tariff baseline. The catch is twofold: the country load is set at the national level, while the duty you actually pay still tracks each product's HS classification, and rules of origin decide whether goods count as Cambodian in the first place. If fabric, components, or major assembly trace back to China, transshipment and substantial-transformation scrutiny can negate the benefit, and any preferential program you hope to use depends on meeting its origin rules. Treat Cambodia as a way to reduce, not eliminate, tariff exposure, and validate the landed-cost delta per SKU before committing volume.
That's a single SKU. Across a full catalog the tariff hits every imported product differently depending on its cost and price — which is exactly why margin damage hides until a quarter closes light.
Paste your Shopify URL. In about ten seconds you'll see every SKU that dropped below your target margin after the current Cambodia tariffs — and the exact price to charge to recover each one. Free, no login.
Scan your store free →Landed cost = unit cost × (1 + tariff rate). To get back to a target margin M, the recovery price is landed cost ÷ (1 − M). For a $90 part from Cambodia at a 37.5% stacked rate, that means charging $113.44 to hold a 40% margin. Round to a clean price point and test it; the point is to stop selling underwater.
The duty starts with where the part lands in the Harmonized Tariff Schedule, and many finished vehicle parts fall under chapter 87 (parts and accessories of motor vehicles). The chapter alone does not set your rate: components are often classified by what they are made of or what they do rather than by the car they go on, so an electrical sensor can pull into chapter 85, a rubber hose into chapter 40, a fastener or bracket into chapter 73, and a bearing into chapter 84. What tends to move the rate is the part's primary function and material, whether it is a general-purpose article versus a part 'solely or principally' for a vehicle, and the country of origin, since origin is what can determine whether Section 301 China duties or other trade-remedy measures apply on top of the base rate. Those measures change over time, so confirm what is currently in force. The exact figure is per-SKU and depends on the precise HS code, so treat any single number as a starting point, not a quote.
A common trap is the 'parts' versus 'general-purpose article' line. A bolt, spring, gasket, or bearing you think of as an auto part is frequently classified by its own nature in chapters 73, 40, or 84 rather than as a chapter 87 vehicle part, which can land it at a different base rate and a different trade-remedy exposure than the rest of your catalog. The mirror-image trap is assuming everything that bolts to a car gets chapter 87 treatment, when an item with an independent commercial identity (a battery, a stereo, a standard bulb) is often classified by its function elsewhere. Pull the actual HS code your customs broker is filing rather than inheriting whatever the overseas supplier wrote on the commercial invoice, since their classification may be geared to export paperwork rather than to what you owe at US entry.
Because much of the auto-parts exposure is origin-driven rather than baseline-duty-driven, a high-leverage move can be shifting sourcing away from the origin that triggers the stacked rate, rather than chasing a lower base rate. Many parts have credible alternate-origin supply in countries such as Mexico, Taiwan, Vietnam, or Thailand, and for goods that qualify under USMCA rules of origin, Mexican-made parts may sit outside the China-specific layers. Substantial transformation is generally the standard that matters here, so simply trans-shipping a finished Chinese part through a third country does not change its origin and can be treated as evasion. This is a customs-compliance question to confirm with your broker before you act. Before you switch, confirm the new supplier's part carries the same HS code and price the full landed cost including the new origin's duty treatment, since a 'cheaper' factory can still cost more once its own classification and freight are included.
Why is my auto-parts duty higher than the roughly 2.5% base rate I expected?
The chapter 87 base rate is generally only the floor. For parts of Chinese origin, Section 301 duties and other trade-remedy measures may apply on top of it, which can produce a landed cost above the headline number; the specifics depend on the measures currently in force. Your effective rate is therefore driven largely by country of origin, not by the base classification alone, so two otherwise identical parts from different countries can carry very different total duty even when they share the same HS code. Confirm the current rate for your specific SKU.
Do I owe the same duty on a sensor or wiring harness as on a brake rotor?
Often no. Electrical components like sensors, harnesses, and control modules are frequently classified in chapter 85 rather than as chapter 87 vehicle parts, and they can carry a different base rate and different trade-remedy exposure. Mechanical parts like rotors, calipers, and suspension arms tend to stay in chapter 87 or pull into chapter 84. The reliable way to know is to check the specific HS code per SKU rather than applying one blanket rate across your catalog.
Can I avoid the China tariff by having the parts shipped through another country first?
Generally no. Routing a finished Chinese part through a third country to relabel its origin is trans-shipment, and US customs can treat it as evasion rather than a legitimate origin change. To actually change origin, the standard is usually substantial transformation, meaning the part is genuinely manufactured or substantially worked on in the new country. Real alternate-origin suppliers or USMCA-qualifying production are legitimate paths, paperwork rerouting is not, and the specifics are worth confirming with a customs broker.
Is sourcing from Cambodia cheaper than from China after tariffs?
Often, but not automatically. Cambodia carries its own reciprocal-era load on top of the base HTS duty, so the saving comes from the gap between Cambodia's stacked rate and China's stacked rate for your exact products, not from any duty-free status. Run the landed-cost math per HS code, since the answer can flip for some categories. This is general guidance, not customs advice.
Does Cambodia qualify for duty-free treatment into the US?
Do not assume so. Cambodia has no comprehensive US free trade agreement, and any preferential program is conditional on meeting its rules of origin, which depend on where materials and processing actually originate. Consider confirming eligibility for your specific goods with a customs broker before pricing a duty-free landed cost. This is general guidance, not customs advice.
Could goods I source from Cambodia be treated as Chinese for tariff purposes?
Possibly, if origin is not genuinely Cambodian. Customs generally looks at substantial transformation, and apparel and footwear typically have category-specific origin rules. If fabric or key components come from China and only light finishing happens in Cambodia, the goods may be treated as Chinese or flagged for transshipment, which can wipe out the intended saving. Keep supplier documentation that supports the country of origin you declare, and confirm the specifics with a customs broker. This is general guidance, not customs advice.
MarginGuard watches every imported SKU and alerts you the moment a tariff change pushes one below your target margin — with the exact recovery price.
Scan your store free →