BlueTec Sprinter Rear Crankshaft Seal – 0000170100ELR

SKU: 0000170100ELR - qty 1

Keep your Sprinter’s engine oil contained and protect the crankcase/transmission junction with this 0000170100ELR rear crankshaft seal — a critical component that seals engine oil where the crankshaft exits the block and connects to the transmission.

✅ What This Seal Does & Why It’s Critical

• Seals the rear end of the crankshaft: The rear main seal sits where the crankshaft extends from the engine into the transmission (or flywheel housing). Its job is to keep engine oil inside the crankcase — preventing leaks between the engine block and transmission housing. 

• Prevents oil leaks and maintains oil pressure: Without an effective rear seal, oil can seep — leading to oil-puddles under the van, dropping oil levels, potential damage, or contamination of transmission/clutch components. 

• Ensures drivetrain cleanliness & reliability: On engines with manual transmissions, a leaking rear main seal can soak the clutch or flywheel housing, causing clutch slippage or contamination issues. With automatics, leaks in that area can damage the torque converter or transmission over time. 

• OEM-spec quality & proper fitment: 0000170100ELR is a correct rear oil-seal spec for certain Sprinter / Mercedes-Benz engines. Using the OEM-rated seal ensures proper dimensions, correct rubber/material hardness for temperature/oil exposure, and reliable sealing performance.

⚠️ When & Why You Should Replace the Rear Seal

Replace the rear main seal if your Sprinter exhibits any of the following issues:

• Oil dripping from the engine-to-transmission junction, or oil pooling under the van after parking.

• Difficulty keeping oil levels stable — frequent topping off, despite no obvious external leaks elsewhere.

• Contamination of transmission / clutch area (oil on clutch surfaces, slipping clutch, messy flywheel housing).

• During engine removal, transmission removal, or clutch / flywheel work — since accessing the seal typically requires transmission/flywheel removal.

Because replacing the rear seal often requires removing the transmission (and possibly flywheel/flexplate), installation is labor-intensive. But once replaced with a new OEM seal, you restore proper sealing and prevent further oil leaks and related damage. 

🚐 Best For

• Sprinter owners whose van is leaking oil from rear of engine / transmission interface.

• Vans undergoing transmission, clutch, or engine-removal service — replacing the rear seal during reassembly is good preventative maintenance.

• High-mileage or older Sprinters where original engine seals may have degraded or hardened, increasing risk of leakage.

• Anyone who wants to maintain oil integrity, avoid messy leaks under the van, and protect clutch/ transmission from contamination.