Blog

The M20147-A Rear Crankshaft Seal Remover & Installer Kit is engineered for Cummins ISX and QSX engines (replaces OEM 3164780). This complete toolset safely removes and installs rear crank seals & wear sleeves with OEM accuracy—preventing scoring, leaks, and costly rework in heavy-duty rebuilds.

The Critical Risks of Improper Rear Crank Seal Service in Cummins ISX/QSX Engines

Cummins ISX15, ISX12, and QSX15 engines power Class 8 trucks, but damaged rear crank seals cause major oil loss, contamination, and accelerated bearing/crank wear.

• Oil leaks – Misinstalled seals drip, requiring $800–$2,000 reseals
• Crank nose scoring – Improper removal mars surfaces, leading to $1,500–$4,000 machining
• Wear sleeve damage – Forceful extraction tears sleeves, causing $1,200–$3,000 replacements
• Downtime losses – Manual methods extend service 2–4 hours, adding $400–$800 labor
• Contamination – Debris enters bearings, totaling $2,000–$5,000 cleanups
• Engine failure – Low oil cascades to rebuilds ($8,000–$18,000)

What is the M20147-A Rear Crank Seal Kit?

The M20147-A Rear Crankshaft Seal Remover & Installer Kit – Cummins ISX/ QSX 3164780 is a complete precision toolset for safe rear crank seal and wear sleeve service. Direct OEM replacement for Cummins 3164780.

Perfect for professional rebuild shops, this kit ensures controlled extraction and concentric installation, reducing rework by 70% and protecting expensive crank noses in ISX/QSX applications.

Complete Kit Specifications & Cummins Compatibility

Professional Features & Engine Repair Benefits

Economic Impact: Rear Seal Service ROI

Scenario	Cost Impact
M20147-A proper service	Seal install – $352.08 kit investment
Leak reseal	$800–$2,000
Crank machining	$1,500–$4,000
Wear sleeve replacement	$1,200–$3,000
Contamination cleanup	$2,000–$5,000
Total improper service cost	$5,500–$14,000 per failure
M20147-A ROI (first prevention)	16–40X return on investment

When Cummins Technicians Choose M20147-A

• Cummins ISX15 rear crank seal service
• QSX15 wear sleeve replacement
• 3164780 tool replacement
• Engine rebuilds
• Clutch housing maintenance
• Heavy-duty fleet service
• Leak prevention

Why Professional Shops Trust M20147-A

Cummins rebuilders trust the M20147-A for its OEM equivalence, complete seal/sleeve capability, and ability to avoid $5,500–$14,000 in damages per error. It delivers safe extraction, perfect seating, and reliability pros demand.

From clutch housing jobs to full overhauls, this kit keeps ISX/QSX engines sealed.

---