What Is the Rear Main Seal?
The rear main seal (also called the crankshaft rear oil seal) sits at the back of the engine block where the crankshaft exits toward the gearbox. It is the last line of defence keeping engine oil inside the engine at the rear. When it fails, engine oil leaks from behind the engine and accumulates in the bell housing area between the engine and transmission. Because the transmission must be removed to access this seal, it is one of the more labour-intensive engine sealing repairs a vehicle can require in UAE workshops.
Rear Main Seal Replacement Cost in UAE 2026
The table below shows typical UAE workshop prices for rear main seal replacement in 2026. Costs include the seal, gearbox removal, seal replacement, and reinstallation including fresh engine oil.
| Vehicle Type | Seal Cost (AED) | Labour (AED) | Total Estimate (AED) |
|---|---|---|---|
| Japanese saloon manual (Toyota, Honda, Nissan) | 30 to 70 | 500 to 800 | 600 to 950 |
| Japanese saloon automatic (Toyota, Honda, Nissan) | 30 to 70 | 600 to 1000 | 700 to 1100 |
| Japanese 4WD (Land Cruiser, Patrol, Prado) | 50 to 100 | 700 to 1200 | 800 to 1400 |
| American SUV (Tahoe, Yukon, Expedition, F-150) | 50 to 100 | 700 to 1200 | 800 to 1400 |
| European saloon or SUV (BMW, Mercedes, Audi, VW) | 80 to 200 | 900 to 1500 | 1100 to 1800 |
Note: if the clutch is oil-contaminated on a manual gearbox vehicle, clutch replacement adds AED 500 to AED 1,500 for parts. The clutch should be inspected whenever the gearbox is removed for rear main seal work, since the labour for clutch replacement is essentially included at that point.
What Affects the Cost of Rear Main Seal Replacement?
- Manual vs automatic gearbox: Both require full gearbox removal, but automatic transmissions are heavier and the reinstallation requires careful torque converter alignment, which adds some time.
- Clutch condition: On manual vehicles the clutch disc, pressure plate, and release bearing are exposed once the gearbox is removed. If any clutch wear is evident, replacing them at this point adds part cost but minimal labour, since the gearbox is already out.
- Flywheel condition: The flywheel is also exposed with the gearbox out. A scored or heat-cracked flywheel should be resurfaced or replaced at the same time.
- Vehicle size and drivetrain complexity: Large 4WD vehicles with transfer cases or complex transmission tunnels take longer to remove the gearbox, increasing the labour estimate.
- Workshop rate: UAE main dealers charge the highest hourly rate (AED 150 to AED 400 per hour). Independent certified garages typically charge AED 100 to AED 250 per hour with equivalent repair quality.
How Long Does Rear Main Seal Replacement Take?
Rear main seal replacement is typically a full-day job at a UAE garage. Most workshops estimate 5 to 8 hours including gearbox removal, seal replacement, and reinstallation. Complex 4WD vehicles with transfer case removal may require an additional half-day. Plan for the vehicle to be at the workshop for one full working day.
Can the Rear Main Seal Be Fixed Without Removing the Gearbox?
On a small number of older vehicles with two-piece rear main seals (common on older American V8 pushrod engines), the seal can be replaced from below without full gearbox removal. This is increasingly rare on modern vehicles, which predominantly use one-piece lip seals that require gearbox removal. Your UAE garage will confirm which type your vehicle uses before quoting the repair.
Find a Certified Garage for Rear Main Seal Replacement in UAE
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