{"product_id":"set-of-4-inner-and-outer-air-filters-for-caterpillar-replaces-121-3661-326421842724","title":"4-Pack Inner and Outer Air Filters for Caterpillar (Replaces 121-3661)","description":"\u003cdiv data-store-description=\"v1\"\u003e\n\u003cp\u003e4-Pack Inner and Outer Air Filters for Caterpillar (Replaces 121-3661). Supplied product details follow.\u003c\/p\u003e\n\u003ch3\u003eSpecifications and fitment\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cp\u003eIncludes: - Set of 4 Inner and Outer Air Filters\u003c\/p\u003e \u003cp\u003eFits Models: - Caterpillar Equipment\u003c\/p\u003e \u003cp\u003eModel Years: - Check fitment before purchase\u003c\/p\u003e \u003cp\u003eSubmodels: - Applies to listed models\u003c\/p\u003e \u003cp\u003eEngine Options: - Compatible with standard engine options\u003c\/p\u003e \u003cp\u003eDescription: This set of 4 inner and outer air filters is designed to replace Caterpillar part number 121-3661. These filters are essential for maintaining optimal engine performance by ensuring clean air intake, which helps to prolong engine life and efficiency.\u003c\/p\u003e \u003cp\u003eFeatures: - High-quality filtration for improved engine performance - Direct replacement for Caterpillar part number 121-3661 - Easy installation for quick maintenance - Durable construction for long-lasting use - Compatible with various Caterpillar equipment models\u003c\/p\u003e \u003cp\u003ePart Number: 121-3661\u003c\/p\u003e","brand":"Usa Autoparts Direct","offers":[{"title":"Default Title","offer_id":44843864784984,"sku":"'326421842724","price":140.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/5961\/0200\/files\/s-l1600_ed3f361f-65b8-4f36-9074-bbfa752d17de.webp?v=1789645563","url":"https:\/\/usaautopartsdirect.com\/products\/set-of-4-inner-and-outer-air-filters-for-caterpillar-replaces-121-3661-326421842724","provider":"Usa Autoparts Direct","version":"1.0","type":"link"}