Product Overview

The injector nozzle seal, part number 1760803, is a fuel injector O-ring seal used across a wide range of TDI diesel engines in the Volkswagen Group lineup, including Volkswagen, Audi, Skoda, and Seat models, and also cross-referenced under Ford part numbers given the shared diesel engine platforms between the two manufacturers. Since each engine uses multiple injectors and this seal is a routine replacement item during injector service, it's a genuinely high-turnover part for anyone stocking diesel fuel system components.

Worn or failing units typically show up as a diesel fuel smell around the engine, visible fuel seepage at the injector base, or a rough idle linked to a vacuum or fuel leak at the injector seal. GSK Auto manufactures this seal to OEM specification at our Ningbo, China facility, with every unit tested before packing. We supply at wholesale volume with low MOQ and support private label packaging, with our team available to confirm fitment before shipping.

Replacement OEM Numbers

Cross-Reference OEM Number

03L103070A, BK2Q6K780BA, 1119203800

(Confirm against your engine code before ordering - this seal is used across multiple TDI engine variants and generations, and is typically replaced in sets of four (one per cylinder), so it's worth confirming quantity needs with your customer before shipping.)

What Is an Injector Nozzle Seal?

Function: The injector nozzle seal creates an airtight, fluid-tight seal between the fuel injector and the cylinder head, preventing combustion gases and fuel from escaping around the injector body.

Working Principle: The O-ring style seal sits in a groove around the injector's lower body, compressing against the cylinder head bore when the injector is installed and torqued down, maintaining a seal despite the heat and pressure cycling from combustion.

Importance: A failing injector seal allows combustion gases or fuel to escape past the injector, which can cause rough running, fuel smell, or carbon buildup around the injector over time, making seal replacement a routine part of injector service on TDI engines.

Common Failures & Signs: Seal material hardening and losing elasticity from repeated heat cycling. Diesel fuel smell noticeable around the engine bay. Visible fuel seepage or carbon buildup at the injector base. Rough idle or misfire linked to a compromised seal at the injector.

Key Features

OEM-standard fitment - matches factory O-ring dimensions (21x36x40x7.3mm) for the 1760803 application.

Precision manufacturing - heat-resistant material construction built to withstand combustion temperatures.

Long service life - designed to maintain a reliable seal through normal service intervals.

Excellent fitment - direct replacement, no modification required.

Corrosion resistance - material resists diesel fuel and combustion byproduct exposure.

Reliable performance - consistent sealing matching factory specification.

Benefits

Importers - high-turnover part covering multiple TDI engine variants across four VW Group brands, simplifying inventory.

Wholesalers - steady demand given seals are replaced in sets during injector service.

Repair Shops - routine part for injector removal and reinstallation jobs, supporting repeat service work.

Distributors - private label packaging available for building a branded catalog.

End Customers - restored smooth idle and elimination of fuel odor or leaks.

Packaging & Shipping

Standard export packaging, sized for a small sealing component. Customized packaging available for distributor branding. OEM-style and private label printing on request. Container loading handled directly, with mixed-SKU consolidation for smaller orders. Worldwide shipping to Europe, North America, South America, the Middle East, Africa, and Southeast Asia.

Why Choose GSK Auto

GSK Auto manufactures factory-direct, keeping pricing tied to production cost. This injector seal is built to OEM specification and tested before packing. We support low MOQ, private label packaging, and worldwide shipping, with our technical team available to confirm fitment before you order.

Call to Action

Sourcing injector nozzle seals for VW, Audi, Skoda, or Seat TDI diesel engines? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.