PAI Industries
PAI 641213 DD15 Oil Pump | Replaces OEM A4721803101
PAI 641213 DD15 Oil Pump | Replaces OEM A4721803101
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PAI 641213 Oil Pump Assembly for Detroit Diesel DD15 | Replaces OEM A4721803101
The PAI Industries 641213 Oil Pump Assembly is a premium heavy-duty replacement designed for Detroit Diesel DD15 engines. Engineered to meet or exceed OEM specifications, this high-quality lube pump delivers consistent oil pressure to protect critical engine components including crankshaft bearings, camshafts, pistons, rocker assemblies, and turbochargers.
Manufactured from high-strength aluminum with precision-machined internal gears, the PAI 641213 is designed to provide dependable oil flow under the demanding conditions of commercial trucking. Whether you're performing an in-frame overhaul, replacing a failed oil pump, or completing a preventive engine rebuild, this premium aftermarket assembly delivers OEM-quality fit, performance, and reliability.
Trusted by diesel repair facilities, owner-operators, fleets, and engine rebuilders across North America, PAI Industries is recognized for producing premium heavy-duty replacement parts that help maximize engine life while reducing downtime.
Key Features
- Premium heavy-duty oil pump assembly
- Precision engineered for Detroit Diesel DD15 engines
- Direct replacement for OEM A4721803101
- High-strength aluminum housing
- Precision-machined 53-tooth gear design
- Maintains proper engine oil pressure
- OEM-quality fit and performance
- Designed for commercial truck applications
- Ideal for engine rebuilds and preventative maintenance
Specifications
- Brand: PAI Industries
- Part Number: 641213
- OEM Reference: A4721803101
- Product Type: Engine Oil Pump Assembly
- Material: Aluminum Housing
- Gear Count: 53 Teeth
- Application: Detroit Diesel DD15 Engines
- Condition: New Premium Aftermarket
Applications
- Detroit Diesel DD15 Engines
- Freightliner Cascadia
- Freightliner Coronado
- Western Star 4700
- Western Star 4900
- Western Star 5700XE
- Freightliner 122SD
- Heavy-Duty Commercial Trucks
Major Cross Reference Numbers
- Detroit Diesel A4721803101
- Detroit Diesel A4721801301
- Detroit Diesel A4721801501
- Detroit Diesel A4721801701
- Detroit Diesel A4721802501
- Detroit Diesel A4721802901
- Detroit Diesel A4721803301
- Detroit Diesel A4721803901
- Detroit Diesel A4721805601
- Detroit Diesel A4721806401
- Detroit Diesel A4721806601
- Detroit Diesel A4721807201
- Detroit Diesel EA4721803901
- Detroit Diesel RA4721803101
- Alliant Power AP63305
- PAI 641213
Why Replace Your Oil Pump?
The engine oil pump is responsible for supplying pressurized oil to every critical moving component inside your engine. Low oil pressure caused by a worn or damaged pump can quickly lead to bearing failure, turbocharger damage, camshaft wear, overheating, and catastrophic engine failure.
Replacing a worn oil pump during an engine overhaul helps restore proper lubrication, maintain factory oil pressure, and protect your investment for hundreds of thousands of miles.
Recommended During Installation
- Inspect the oil pickup tube and screen
- Replace worn or damaged oil pump seals and O-rings
- Prime the lubrication system before initial startup
- Replace the engine oil and oil filter
- Verify oil pressure after installation
š„ High Conversion Add-On: Protect Your Engine Investment
A failed oil pump can cause catastrophic engine damage in minutes. Installing a premium PAI oil pump during your rebuild helps ensure proper lubrication, stable oil pressure, and maximum protection for your DD15 engine. Pair your repair with premium filters and fresh engine oil for the best long-term reliability.
- ā Direct OEM Replacement
- ā Precision 53-Tooth Gear Design
- ā Heavy-Duty Aluminum Housing
- ā OEM Fit & Performance
- ā Built for Commercial Diesel Engines
- ā Trusted by Professional Engine Rebuilders
š Frequently Purchased Together
- ā PAI DD15 Water Pump
- ā PAI DD15 Head Gasket
- ā DD15 Head Bolt Kit
- ā Donaldson P551005 Oil Filter
- ā Premium 15W-40 CK-4 Diesel Engine Oil
- ā Complete DD15 Overhaul Gasket Kit
Complete your DD15 engine rebuild with premium lubrication, cooling system, and sealing components to maximize engine reliability and reduce repeat repairs.
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