1956 Studebaker E6 Engine Oil Pressure Switch and Sender Guide
Is your oil pressure light flickering or staying on? It might be this simple, inexpensive switch.
- A faulty oil pressure switch can give false warnings; always check your oil level first before replacing the part.
- For a 1956 Studebaker, a new aftermarket switch from a brand like Standard Ignition is the only practical and reliable choice.
- Replacement is a very easy DIY job that takes less than 30 minutes with basic hand tools.
- Never ignore an oil pressure warning light; if you are not certain the switch is bad, do not drive the vehicle.
Is Your Oil Pressure Light Lying to You?
On a classic Studebaker truck, the oil pressure warning light is a key indicator of your engine's health. But the switch that controls that light can fail. A faulty engine oil pressure switch might keep the warning light on even when pressure is fine, or worse, it might fail to warn you of a real problem. Since this part is inexpensive and easy to replace, it's often the first thing to check when you have oil pressure warning issues.
Symptoms of a Failing Oil Pressure Switch
A bad oil pressure switch can cause confusing symptoms. Before assuming the switch is bad, always check your engine oil level first. If the oil level is correct, look for these signs:
- Oil Light Stays On: The most common symptom is an oil pressure warning light that is always on, even when you know the engine has good pressure.
- Flickering Oil Light: A light that flickers, especially at idle or during turns, can point to a failing switch that is right on the edge of its pressure threshold.
- Oil Leak: The switch itself is threaded into an oil passage in the engine block. Over time, the housing can crack or the seal can fail, causing a noticeable oil leak.
Choosing the Right Aftermarket Part
For a 1956 vehicle, finding a "New Old Stock" (NOS) original part is nearly impossible and often not worth the high cost for a simple switch. The good news is that aftermarket replacements are readily available and are the only practical choice.
Brand Quality Assessment
| Brand Tier | Brand(s) | Our Assessment |
|---|---|---|
| Standard Replacement | Standard Ignition (Standard Motor Products) | Standard Ignition is a well-known aftermarket brand that has been making electrical components for decades. For a simple part like an oil pressure switch on a vintage truck, their quality is considered reliable and is a common choice for restorations and daily drivers. |
| OEM / NOS | Studebaker / AC | Original parts are not in production. Any available parts would be New Old Stock (NOS), which are very rare, expensive, and may have degraded seals due to age. Aftermarket is the more reliable and cost-effective option. |
Typical Replacement Costs
Replacing the oil pressure switch is one of the more affordable repairs you can make. The part itself is inexpensive, and labor is minimal.
| Part Type | Price Range |
|---|---|
| New Aftermarket Switch | $12.56 - $12.56 |
| Shop Labor | $50 - $100 |
| Total Cost | $62 - $113 |
Pro Tip: Use Thread Sealant
The oil pressure switch has tapered pipe threads that seal against the engine block. When installing the new switch, apply a small amount of thread sealant or Teflon tape to the threads. This will ensure a leak-free seal. Do not overtighten the switch, as this can damage the threads or the switch itself.
Frequently Asked Questions
Where is the oil pressure switch located on a 1956 Studebaker E6?
On most classic Studebaker V8 engines, the oil pressure switch is threaded directly into the engine block. It is typically located near the distributor or the oil filter housing. Look for a small, single-wire sensor screwed into the side of the block.
Is this a difficult part to replace myself?
No, this is a very DIY-friendly job. For most 1950s trucks, access is good. The process involves disconnecting the single wire, using a wrench or a special deep socket to unscrew the old switch, applying sealant to the new one, and installing it. The entire job usually takes less than 30 minutes.
Are there any recalls for the 1956 Studebaker E6?
No. There are no recalls listed with the National Highway Traffic Safety Administration (NHTSA) for this vehicle. The NHTSA's digital records generally begin with vehicles made in 1966 and later.
Should I use a switch for a light or a sender for a gauge?
It depends on your dashboard. If your truck has a simple red warning light for oil pressure, you need a pressure "switch". If your truck was equipped with a full sweep gauge that shows the pressure reading, you need a pressure "sending unit" or "sender". The two parts look similar but function differently and are not interchangeable.
Technical Specifications
OEM Part Numbers: 1539898
Thread Type: National Pipe Thread (NPT) Terminal Type: 1-Blade Connector Function: Operates Dashboard Warning Light
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.