K&N IS300 Drop In Air Filter - 33-2170

The K&N 33-2170 Drop-In Air Filter is a high-flow replacement air filter engineered as a direct fit for the Lexus IS300 and GS300. Designed to drop straight into your factory airbox with zero modifications, it replaces your disposable paper filter with a washable, reusable unit built from layered, oiled cotton media — delivering improved airflow over a stock filter while maintaining excellent filtration. Whether you're chasing a modest performance edge, better throttle response, or simply want a filter you'll never have to throw away again, the K&N 33-2170 is a proven upgrade for IS300 and GS300 owners.

Key Features & Benefits

• Layered Oiled Cotton Media: K&N's signature multi-layer cotton gauze construction is pre-oiled at the factory, ready to install right out of the box — no prep needed before your first drive.
• Direct Drop-In Fitment: Replaces the OEM paper filter in your stock airbox without any cutting, drilling, or custom hardware. Retains your factory intake system and passes visual inspection.
• Improved Airflow Over Stock: The high-flow design is engineered to outflow a standard disposable paper filter, which can contribute to improved throttle response and overall engine breathing.
• Washable & Reusable — Lifetime Filter: Clean, re-oil, and reinstall. This filter is designed to last the life of your vehicle, eliminating the recurring cost of replacement paper filters.
• Pre-Oiled & Ready to Install: K&N ships the 33-2170 pre-oiled so you can drop it into your factory airbox and drive immediately — no messy oiling step required at installation.
• Improved Filtration Performance: Engineered to improve overall air filtration compared to a standard stock filter, helping protect your engine while keeping airflow high.

Specifications

• Part Number: K&N 33-2170
• Filter Type: Drop-in panel replacement (factory airbox compatible)
• Filter Media: Layered, oiled cotton gauze
• Height: 1.313 in (33 mm)
• Condition: Pre-oiled, ready to install
• Reusable: Yes — washable and re-oilable for lifetime use

Fitment

The K&N 33-2170 is confirmed to fit the following vehicles:

• Lexus IS300
• Lexus GS300

Always verify your specific model year and engine code against K&N's fitment guide before ordering. If you're unsure whether the 33-2170 is correct for your exact configuration, our team at ThreePiece.us is happy to confirm fitment before you buy.

What's in the Box

• 1x K&N 33-2170 High-Flow Drop-In Air Filter (pre-oiled, ready to install)

Why Buy from ThreePiece.us

• Free Shipping on Every Order: No minimum order threshold — your K&N filter ships free, no matter what.
• Affirm Financing Available: Split your purchase into manageable payments through Affirm at checkout — great for larger orders or builds.
• Expert Fitment Help: Not sure if the 33-2170 fits your exact IS300 or GS300 build? Reach out to our team and we'll verify compatibility before you order.
• Enthusiast-Focused Retailer: ThreePiece.us specializes in aftermarket parts for performance and luxury vehicles — we understand these platforms and stock products we'd run ourselves.

Frequently Asked Questions

No. The 33-2170 is a direct drop-in replacement designed to fit inside your factory airbox. No cutting, drilling, or aftermarket intake hardware is required — it installs exactly like your OEM paper filter.

The K&N 33-2170 comes pre-oiled from the factory and is ready to install right out of the box. No additional oiling step is needed before your first use.

The 33-2170 is washable and reusable. When it becomes dirty, you can clean it with K&N's filter cleaning kit, allow it to dry fully, re-oil it, and reinstall. This process can be repeated throughout the life of your vehicle.

Yes — the K&N 33-2170 is confirmed to fit both the Lexus IS300 and Lexus GS300. If you want to confirm fitment for your specific model year, contact the ThreePiece.us team before placing your order and we'll verify it for you.