Description
Product Overview
When a Cummins ISX engine needs an oil pan replacement, the part has to match the engine and its sump configuration. Our ISX Oil Pan AK-4952540 is an aftermarket steel oil pan listed for Cummins ISX applications. It has an oil capacity of 9 gallons and is listed for both front- and rear-sump configurations.
The pan provides the lower engine housing that holds the lubricating oil between circulation cycles. If the existing pan is damaged, leaking or no longer serviceable, replacing it with a correctly matched part can get the lubrication system back into proper working order.
What the Part Does
The oil pan sits beneath the engine and collects oil after it circulates through the lubrication system. Oil is drawn back into the engine from the pan as the pump continues moving it through the engine’s internal components.
The pan also forms part of the engine’s lower enclosure, so its condition matters. A damaged pan or a poor sealing surface can lead to oil loss. Since the engine depends on a sufficient oil supply for lubrication, any suspected leak should be checked before it leads to a larger problem.
Common Problems This Part Solves
An oil pan replacement may be necessary when inspection reveals damage that cannot be repaired properly. Common reasons to check the pan include:
- Oil leaks: Oil around the pan or its gasket area may indicate a sealing problem or damage.
- Impact damage: Road debris or contact with an obstacle can dent or crack the pan.
- Corrosion: Rust or deterioration can weaken the metal over time.
- Damaged mounting or sealing surfaces: A pan that cannot seal correctly may continue leaking after a gasket replacement.
Find the source of an oil leak before ordering parts. A leaking gasket, loose fastener or another engine component may be responsible rather than the pan itself.
Why Replacement Matters
An oil leak can reduce the amount of lubricant available to the engine. Running with insufficient oil can lead to serious internal damage, so a confirmed leak should not be ignored.
Replacing a damaged pan also gives the technician an opportunity to inspect the sealing surface and mounting points. If the pan is bent or cracked, installing another gasket alone may not solve the problem.
Compatibility and Fitment
Before ordering, compare the existing pan and engine configuration. Confirm the sump location, mounting arrangement and applicable engine details rather than relying on the engine family alone. Browse our Engine Parts category for other engine components.
Installation and Service Notes
Follow the engine manufacturer’s service procedure when removing and installing the oil pan. Drain the oil safely, inspect the mating surfaces and clean away old gasket material without damaging the sealing area.
Use the correct gasket or sealant for the application and tighten fasteners to the specified torque. After installation, refill with the correct oil, check the level and inspect for leaks. Confirm that the pan is secure before returning the truck to service.
Use Case
This oil pan is an option for repair shops, fleet maintenance teams and truck owners working on a Cummins ISX engine with a damaged or leaking pan. It is especially important to verify the front- or rear-sump configuration before purchase, since the correct layout is essential for a proper fit.
About Us
We’re a family-owned group of Peterbilt dealerships dedicated to getting you the parts you need quickly and affordably. Whether you’re looking for Paccar OEM parts, reliable aftermarket replacements, or popular upgrades like seats and filters, we make it easy to keep your truck running and on the road. If you don’t see what you need online, just give us a call or send an email — chances are we can get it. We pride ourselves on fast service, fair prices, and being a partner you can depend on when downtime isn’t an option.
FAQs
What is the oil capacity of this pan?
The capacity is 9 gallons. Always follow the engine manufacturer’s instructions for the correct oil type and fill level.
Does this oil pan fit front- and rear-sump configurations?
The listing states that it is a universal fit for both front- and rear-sump configurations. Verify the mounting layout and application details before purchase.
What are the cross-reference numbers?
The listed cross-reference numbers are AK-3680531 and AK-3680530. Confirm the number against your existing part and engine application before ordering.
