SKU: 33-2591 | UPC: 024844001306
K&N 33-2591 Replacement Air Filter for 1978-1995 Porsche 928
The K&N 33-2591 is a washable reusable drop-in air filter designed for 1978-1995 Porsche 928 models including Base S S4 GT and GTS variants. Its layered oiled cotton media allows more airflow for horsepower gains while trapping contaminants for engine protection. This direct factory replacement installs easily and lasts the life of your vehicle with K&N lifetime limited warranty.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form a mesh to block and trap dirt and contaminants
- Clean Once Every 5 Years: Service interval every 75000 miles under normal highway driving or 5 years at 15000 miles per year
- Easy Installation: Pre-oiled filter drops straight into factory air box for quick performance upgrade with no tools needed
- Engineered Power: High-flow media increases horsepower acceleration and overall engine performance
- Reusable Design Saves Money: One K&N filter replaces multiple disposables saving up to 125 dollars over 200000 miles versus OE filter MSRP
Product Notes
- Pre-oiled and ready for immediate drop-in installation
- Wash with K&N cleaning kit and re-oil for maintenance every 75000 miles
- Weight 1 lb shipping box dimensions 8.25 x 7.5 x 2.75 inches
Installation Notes
- Professional installation recommended.
- Remove stock filter and drop K&N 33-2591 into existing air box
- Compatible with factory air box no modifications or hardware required
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1978-1982 | Porsche | 928 | Base |
| 1990-1991 | Porsche | 928 | Base |
| 1990-1991 | Porsche | 928 | GT |
| 1993-1995 | Porsche | 928 | GTS |
| 1983-1986 | Porsche | 928 | S |
| 1987-1989 | Porsche | 928 | S4 |
Why Choose K&N?
- Decades of engineering high-performance air filters for automotive enthusiasts
- Durable construction with premium materials built to last vehicle lifetime
- Backed by No-Hassle Lifetime Limited Warranty for stock replacements
Frequently Asked Questions
- Q: Does the K&N 33-2591 fit all 1978-1995 Porsche 928 models?
A: Yes it fits Base (1978-1982 1990-1991) GT (1990-1991) GTS (1993-1995) S (1983-1986) and S4 (1987-1989) with 4.5L to 5.4L engines - Q: What material is used in this air filter?
A: Four layers of oiled premium cotton gauze media with centered rubber flange filter dimensions 6.75 inch OD 5.5 inch ID 1.563 inch height - Q: What is the warranty and cleaning process?
A: No-Hassle Lifetime Limited Warranty covers defects wash with K&N kit every 75000 miles re-oil and reinstall
Shipping &. Handling
- Method: Ground shipping via UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure cardboard box 8.25 x 7.5 x 2.75 inches
- Weight: 1 lb
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