There are two types of engine lubrication systems, dry sump and wet sump. A dry sump system has two oil pumps, one to circulate the lubricating oil through the engine and a second scavenging pump to pull oil from the engine’s sump and send it to an external storage reservoir. Dry sump systems are used on some performance cars, but most vehicles have a wet sump system, where oil collects and is stored in a reservoir beneath the engine called the oil pan.

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In a wet sump system, the oil pump pickup tube screen is positioned low in the oil pan so it is always covered with oil. The oil pump draws oil from the pan through the pickup tube and sends it through the engine’s oil passages, where it lubricates and cools engine bearings and other moving parts. The oil then drains back into the oil pan. The oil pan is designed to hold enough oil for all anticipated operating conditions.

At one time most oil pans were formed from stamped steel, but today many engines have sophisticated reservoirs of cast aluminum, which enables shapes and the inclusion of features that would not be possible with a steel stamping. For example, the pickup tube and oil filter are attached to some cast aluminum pans. Some pans have cooling fins to help reduce oil temperature and some, particularly performance models, have baffles to prevent oil from sloshing away from the pickup tube during hard cornering and acceleration, and windage trays to separate the sump area from the churning air created by the rotating assembly.

Thankfully, the most attention the average oil pan gets is when the drain plug is removed during an oil change. However, their mounting position can make them vulnerable to getting bashed from road debris or exuberant off-road driving. Such contact can result in dents, cracks or even holes. If your oil pan suffers unfortunate damage, we have direct fit replacements for much less than you’d pay at the dealer. Our replacement oil pans are made to original equipment specifications, so you can be assured of perfect fit and function. With our oil pans, you can get back on the road and have cash left in your pocket.

We also carry all the related oil pan components, like gaskets and drain plugs, so you only need to make one phone call to get everything to complete the job. If your vehicle didn’t come with one, upgrade to a magnetic drain plug for additional engine protection. Dipstick tubes can break and dipsticks can get lost, leaving you to guess at your engine oil level. Don’t leave such an important inspection to chance! If you think you left your dipstick at the rest stop a few hundred miles back, don’t interrupt your trip. With just a phone call we can have a direct replacement delivered right to your door.

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    Glossary of Engine Internal Parts
    Internal combustion engines are extremely complex and feature a wide array of components that rotate, move up and down, pump, seal, or remain stationary. When repairing or rebuilding your engine, you will come across many different terms when referencing repair manuals and ordering parts. We know it can be confusing, especially when the repair is complex. Even if you are paying a professional to do the work, it’s good to be conversant with the topic. In order to help you understand the terminology of engine components, we’ve created the following glossary, listed in alphabetical order.

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Oil Pans, Drain Plugs & Dipsticks Reviews

Average rating:  4.5  4.7 - 26 reviews
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5 of 5
Better Than Dealer Option
Great fit and cheaper than the dealership.
PPosted by Patrick (Erie, CO) /
2004 Audi A4
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