The 4238 140 4401 air filter set is engineered for small engine air purification. Its dual-element design (paper main filter + sponge pre-filter) provides layered protection: the sponge pre-filter blocks large debris first, while the high-density paper filter captures fine dust (preventing engine wear).

The oil-resistant sponge resists moisture and fuel contamination, and the paper filter maintains airflow while filtering. Designed for precise fit, it installs in seconds—ideal for chainsaws, trimmers, and small power equipment using the 4238 140 4401 filter specification.

Q1: Do you offer customized OEM processing and ODM R&D?
A: Yes, we offer customized OEM processing and independent ODM research and development services.
Q2: Do you have stable upstream supplier cooperation resources?
A: We have stable upstream supplier resources to ensure high-quality and stable raw material supply.
Q3: What logistics channels do you adopt for export orders?
A: We adopt sea, air and express logistics channels for all export orders.
Q4: What is your guaranteed lead time after payment?
A: We guarantee a lead time of within 15 days for all conventional paid orders.
Q5: Do you test each product individually before delivery?
A: Each product is individually tested 100% to ensure qualified delivery.
Q6: Can overseas customers apply for free samples?
A: Overseas customers can apply for free samples and bear the corresponding freight cost.
Q7: How do you ensure long-term stable product quality?
A: Standardized production and strict full-process inspection ensure long-term stable product quality.