Product Overview

The oil seal, OEM number 90311-45008, is the timing chain or belt cover oil seal fitted to the Toyota Land Cruiser, model years 1984-1993, covering the 3.4L, 4.0L, 4.2L, and 4.5L six-cylinder engine variants, including the 1FZFE, 2F, 2H, 3B, and 3FE engine codes. Given how many classic Land Cruisers remain in long-term service and even active restoration, this is a steady part to stock for anyone servicing these vehicles.

Worn or failing units typically show up as an oil leak at the front of the engine near the timing cover, oil spots on the ground under the vehicle, or a burning oil smell if the leak is significant enough to contact hot engine components. GSK Auto manufactures this oil 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

90311-45069, 90311-45015, 90311-45014

(Confirm against your VIN or chassis code before ordering - this seal covers a wide range of six-cylinder engine codes across nearly a decade of Land Cruiser production, so it's worth double-checking the exact engine code before ordering at volume.)

What Is a Timing Cover Oil Seal?

Function: The timing cover oil seal prevents engine oil from leaking out around the crankshaft where it passes through the timing chain or belt cover, keeping the lubrication system sealed while allowing the crankshaft to rotate freely.

Working Principle: The seal's lip rides against the rotating crankshaft surface, maintaining an oil-tight barrier as the crankshaft spins at engine speed, while the seal's outer edge is pressed into the timing cover housing to prevent leakage at that interface as well.

Importance: A failing timing cover seal allows engine oil to leak out at the front of the engine, which can lead to low oil levels over time and, if severe enough, oil contacting the drive belt or other components near the front of the engine.

Common Failures & Signs: Seal material hardening or cracking with age, reducing sealing effectiveness. Oil leak visible at the front of the engine near the timing cover. Oil spots or puddles on the ground under the parked vehicle. Burning oil smell if the leak is significant enough to reach hot engine surfaces.

Key Features

OEM-standard fitment - matches factory seal dimensions and crankshaft diameter for the 90311-45008 application.

Precision manufacturing - seal lip design maintains consistent sealing under rotation.

Long service life - built to handle sustained engine operation and heat exposure.

Excellent fitment - direct replacement, no modification required.

Corrosion resistance - material resists oil and heat degradation over time.

Reliable performance - consistent oil retention matching factory specification.

Benefits

Importers - steady demand from a widely used classic Land Cruiser platform kept in long-term service.

Wholesalers - reliable repeat-order item for restoration and maintenance shops.

Repair Shops - OEM-spec fitment reduces comeback risk on timing cover reseal jobs.

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

End Customers - protection against oil leaks and low oil levels.

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 oil 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 timing cover oil seals for the classic Toyota Land Cruiser? Contact GSK Auto for a wholesale quote, catalog, or OEM/private label cooperation.