Injector Shop 4-337 Fuel Injectors Seal Kit for Denso Injector

Replaces the seals and filters that cause most injector leaks and flow problems. This kit services up to 6 Denso fuel injectors.

What's in the Kit

• 6 Micro filter baskets
• 6 Upper O-rings
• 6 Lower intake seals

Fits

• Denso fuel injectors
• This kit is not universal. Use our vehicle lookup to confirm fitment, or contact us before ordering and we'll help verify.

Quality

• FKM (Viton®) O-rings resist heat, fuel, oil, and chemicals
• Precision-molded plastic parts for correct fit and sealing
• Built to meet or exceed OEM form, fit, and function

Pro Tip

Clean and flow test your injectors before reinstalling them. New seals and filters are only one part of restoring injector performance.

Why The Injector Shop

• Testing fuel injectors since 1990
• Injector specialists serving DIYers and professional shops alike
• US-based support from Washington State

Good to Know

• Injectors shown in photos are for reference only and are not included.
• O-ring and plastic part colors may vary from photos.