How often should I clean my K&N air filter?

The cleaning frequency depends on your driving conditions. In normal conditions, clean it every 50,000 miles. If you drive in dusty or off-road conditions, you'll want to clean it more often.

What is the flange size of this air filter?

This K&N air filter has a 51mm neck flange. This is the diameter of the opening that connects to your carburetor or throttle body. Make sure this matches your intake for proper fitment.

Can I use any cleaning kit to service this filter?

K&N recommends using their Recharger cleaning kit to properly clean and re-oil your filter. These kits are specifically formulated to work with K&N filters, ensuring optimal performance and longevity.

K&N Universal Custom Air Filter - Oval - Red - 51mm Neck Flange

1 / 2

K&N Engineering

K&N Universal Custom Air Filter - Oval - Red - 51mm Neck Flange

Name: K&N Universal Custom Air Filter - Oval - Red - 51mm Neck Flange
Brand: K&N Engineering
Price: 157.99 USD
Availability: InStock

$157.99

Designed to boost performance from your carburetor while keeping the dirt out.

Key Features

High-Flow design — improves engine performance
Washable air filter — can be cleaned and reused
Custom chrome top and base plates — adds style to your engine bay

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits this vehicle

Lotus Elan 1967-1973

Need Help?

631-982-0042

Fast Shipping

Nationwide delivery

Secure Checkout

Safe & protected

Since 1957

Family-owned

Product Details

K&N Custom Air Filter kits are designed to boost the performance from your carburetor while keeping dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and a K&N washable air filter.
BOLT-ON UNIT S/OVAL 54MM

K&N Custom Air Filters for Single or Two Barrel Carburetors - K&N custom air filter kits are designed to boost performance from your carburetor while keeping the dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and the famous K&N High-Flow Washable Air Filter.