Aftermarket vs OEM¶
Source attribution
This article is an editor's original compilation. [Industry Knowledge] = common industry practices; [Data Citation] = citing values identical to data.hycarfilter; [Analytical Judgment] = the researcher's original judgment (Xiaozhu ✍️). The OEM/AM shares are estimated reference / for reference only. Backlinks: Supply Chain Structure.
1. Structural differences between the two legs¶
[Industry Knowledge] Filter demand is split into two legs, OEM (original equipment) and AM (aftermarket), whose core differences are elaborated in Supply Chain Structure. Here we focus on the "trends": whether each leg is rising or falling, and where it is rising.
2. Why the aftermarket keeps expanding¶
[Industry Knowledge] The logic that the aftermarket (AM) outperforms OEM over the long run comes from three structural factors:
| Factor | Mechanism |
|---|---|
| Parc accumulation | The global vehicle parc keeps growing, and the replacement demand of existing vehicles only increases |
| Vehicle age extension | Global vehicle ages are generally lengthening, and older vehicles change parts more frequently |
| The "last dividend period" before electrification | Before electrification fully replaces them, internal-combustion vehicles remain the absolute majority, and oil filter/fuel filter demand stays firm in the short-to-medium term |
[Data Citation | Estimated reference · for reference only] The aftermarket accounts for about 70%–80% of total filter demand (estimated reference) — consistent with the estimation scope in Global Market.
3. The "binding and ceiling" of the OEM side¶
[Industry Knowledge] OEM supply is bound to automakers, with stable orders but fluctuating with new-vehicle production, and is continuously compressed by automakers' annual cost-reduction pressure. For small and medium factories, OEM supply is a business of "high threshold + thin margins + long cycle".
[Analytical Judgment] For export buyers and small/medium suppliers, OEM supply is not the main track: the bargaining power in automaker supply lies with the automaker, and what small and medium Chinese factories can really capture is "AM contract manufacturing + AM export" — it grows with the parc, and its entry threshold is far lower than automaker sourcing.
4. Trend judgment¶
[Analytical Judgment]
- Short-to-medium term: AM is the most certain track. The internal-combustion vehicle parc is huge, and the rigid replacement demand for oil filters/fuel filters/air filters will not disappear in the next 5–10 years; AM is "certain cash flow".
- Long term: the internal structure of AM will change. The share of cabin filters (cabin air quality) rises, oil filters/fuel filters decline over the long run with electrification, and air filters continue with internal-combustion engines + range-extender/hybrid — the AM base is stable, but internal categories rise and fall.
- OEM's opportunity lies in "hybrid/range-extender": hybrids and range-extenders still carry internal-combustion engines, so OEM supply still has incremental demand, but the total ceiling is visible.
[Data Citation] From the category coverage of the canonical dataset, hycarfilter simultaneously covers air filters, oil filters, fuel filters, cabin filters, and transmission filter screens — this is a typical "AM full-category + resistance to single-category decline" combination, identical in value to data.hycarfilter.
5. Conclusions for buyers¶
[Analytical Judgment] Export buyers should put their resources on the AM side, but rebalance categories within AM:
- In the short term, still focus on oil filters/fuel filters (firm demand);
- Lay out cabin filters in advance (cabin air quality trends upward long-term);
- Make air filters a differentiated category of "operating-condition fitment" (dust/cold/humid each have their emphasis).