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Dodge 400 Engine Oil Pumps

Dodge 400 Engine oil pumps

Starting at $74.95, AutoBuffy stocks 1 engine oil pumps from SKP to fit your Dodge 400. The oil pump pressurizes engine oil and circulates it to every moving part inside the engine. When it fails, oil pressure drops and metal-on-metal contact begins within seconds — leading to catastrophic and often irreversible engine damage if ignored.

Signs your Dodge 400 needs a new engine oil pump

  • Oil pressure warning light illuminates at idle or under acceleration and does not clear after an oil change
  • Oil pressure gauge reads abnormally low or fluctuates erratically while driving
  • A loud ticking, clattering, or knocking noise from the engine that worsens at idle — caused by valve train and bearing starvation
  • Engine overheating without a coolant-system fault, because under-lubricated friction generates excess heat
  • Noticeable drop in engine performance or rough idle as hydraulic valve-timing components lose the pressure they need to operate
  • Metallic debris or sludge found in the oil pan during an oil change, indicating the pump pickup screen or gears are deteriorating

Which engine oil pump should you buy for your Dodge 400?

Oil pump selection comes down to two main factors: whether the replacement matches your engine's original pump style (gear-rotor, gerotor, or vane), and whether you want a direct OE-equivalent or an upgraded higher-volume unit. For most daily drivers, an OE-spec replacement restores proper pressure; high-performance or high-mileage engines often benefit from a higher-volume pump that maintains pressure as internal clearances widen.

OE-Replacement (standard volume)
Best for
Daily drivers with normal mileage seeking a direct swap
What you get
Matches factory pressure specs and pickup tube fitment; straightforward installation with no engine modifications required
High-Volume Pump
Best for
High-mileage engines, performance builds, or engines with worn bearings
What you get
Greater oil flow at idle and low RPM to compensate for increased internal clearances; same bolt pattern as OE on most applications
High-Pressure Pump
Best for
Forced-induction or racing engines that run thin synthetic oil at high RPM
What you get
Elevated relief-valve setting maintains pressure under extreme heat and load; may cause bypass-valve chatter on stock engines — verify compatibility
Complete Oil Pump Kit (pump + pickup tube + gaskets)
Best for
Any repair where the pickup tube O-ring or screen shows wear, or the pan has been dropped
What you get
All failure-prone components replaced together; reduces the chance of a second teardown and is typically the best value for a full repair

Engine oil pumps brands we stock for your Dodge 400

SKP
1 option · from $74.95

Replacing the engine oil pump on a Dodge 400

Advanced⏱ 3–6 hoursFloor jack and jack stands or vehicle liftOil drain pan and oil filter wrenchSocket set and combination wrenches (standard and metric)Torque wrenchGasket scraper and RTV sealant (if required by application)

Replacing an oil pump typically requires draining the engine oil, removing the oil pan to access the pump, and — depending on the engine design — removing the timing cover or front cover as well. The pump must be properly seated on the crankshaft snout or block registers before fasteners are torqued in the sequence specified in a service manual for your engine. Always refill with fresh oil, verify pressure with a mechanical gauge before sustained driving, and inspect for leaks at the pan gasket and pickup tube.

Frequently asked questions

How much does it cost to replace engine oil pumps on a Dodge 400?
The part itself starts at $74.95 on AutoBuffy. Total repair cost depends on whether you DIY or hire a shop. Professional labor is substantial because the oil pan — and sometimes the timing cover — must be removed to access the pump. Budget for a new oil pan gasket and pickup tube O-ring at the same time.
Can I drive my Dodge 400 with low oil pressure before replacing the oil pump?
No. Low oil pressure means the engine's bearings, camshafts, and valve train are receiving inadequate lubrication. Even a short drive can score bearing surfaces or seize the engine entirely. If the oil pressure warning light is on, stop the engine as soon as it is safe to do so and have the vehicle towed.
How long does an engine oil pump last on a Dodge 400?
Oil pumps are designed to last the life of the engine and often do when oil changes are kept current. Premature failure is almost always traced to extended oil change intervals, running low on oil, or sludge buildup from degraded oil blocking the pickup screen. Consistent maintenance is the best way to maximize pump life.
Is low oil pressure always caused by a bad oil pump on a Dodge 400?
Not always. Low oil pressure can also result from a clogged pickup tube screen, a faulty oil pressure sensor, a worn pressure relief valve stuck open, severely worn engine bearings, or simply low oil level. Diagnose with a mechanical gauge before replacing the pump — the sensor or relief valve may be the actual fault.
Does the oil pump need to be primed after installation on a Dodge 400?
Yes. A dry pump can take several seconds to build pressure on first start, which risks momentary metal contact. Pack the pump cavity with clean petroleum jelly or engine assembly lube before installation, and crank the engine with the ignition disabled for a few seconds to pre-prime the system before the first full start.
Should I replace the oil pickup tube and screen when replacing the oil pump on a Dodge 400?
Yes, and it is strongly recommended. The pickup tube O-ring is a common source of air ingestion that mimics a failing pump. Since the oil pan is already off, replacing the tube, screen, and O-ring adds minimal cost and eliminates a common comeback failure. Many quality oil pump kits include these components together.

Shop engine oil pumps by year for the Dodge 400

19831982

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