Dorman 65231 | Engine Oil Drain Plug

Part Number
Oil Drain Plug Standard 7/8 In.-18, Head Size 1-1/8 In.

Fits: 62-65 Jeep 6-230, 62-66 Jeep CJ3, 62-71 Jeep CJ5, 62-71 Jeep CJ6, 62-69 Jeep Dispatcher, 62-66 Jeep DJ3, 62 Jeep F4-134, 62-66 Jeep FC150, 62-64 Jeep FJ3A, 62-67 Jeep Gladiator, 62-65 Jeep Tornado, 62-66 Jeep Truck, 62-67 Jeep Universal, 62-69 Jeep Universal Truck, 62 Jeep Utility, 62-64 Jeep Utility Wagon, 63-66 Jeep F-134, 63-67 Jeep J-100, 63-65 Jeep J-200, 63-65 Jeep J-210, 63-65 Jeep J-220, 63-65 Jeep J-230, 63-65 Jeep J-300, 63-65 Jeep J-310, 63-65 Jeep J-320, 63-65 Jeep J-330, 63-67 Jeep Wagoneer, 64-66 Jeep FC170, 64 Jeep FJ3, 65-71 Jeep DJ5, 65-68 Jeep DJ6, 65-67 Jeep J-2500, 65-67 Jeep J-2600, 65-67 Jeep J-2700, 65-67 Jeep J-2800, 65-67 Jeep J-3500, 65-67 Jeep J-3600, 65-66 Jeep J-3700, 65-67 Jeep J-3800, 66-68 Jeep CJ5A, 66-68 Jeep CJ6A, 66-71 Jeep Commando, 66-71 Jeep Jeepster

Special Price $12.00 Regular Price $15.99
In stock
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Estimated Ship Date: 1 Business Day or Less

This replacement engine oil drain plug is a direct replacement for a damaged or worn original equipment drain plug, precisely matching the thread pitch to ensure a quality seal.

BRAND: Dorman - Autograde


  • Cost-effective solution - offers original equipment performance at competitive price
  • Durable construction - this replacement drain plug is made of corrosion-resistant materials for reliable service
  • Ideal replacement - this engine oil drain plug matches the fit and function of the original drain plug
  • Quality tested - this part has undergone try-on testing to ensure a quality seal
  • Engine, Oil, Drain, Plug, Plugs, Drains
  • Jeep 1971-62
  • Oil Drain Plug Standard 7/8 In.-18, Head Size 1-1/8 In.


Bolt Grade3
Describe TypeOil Drain Plug Standard
Drain MethodConventional
Gasket Or Seal IncludedYes
Gasket TypeGasket
Head Drive TypeHex
Head Size (SAE/Metric)1-1/8 in
Oversized ThreadNo
Package Contents1 Oil Drain Plug
SAE or MetricSAE
Socket Points6
Special Tool RequiredNo
Thread Diameter0.875
Thread Pitch18
Thread Size7/8 in -18
Thread TypeFine
Threads Per Inch18

7/8 In. x 18 ThreadShank Length (In): 0.625 in Package Quantity: 1 Dorman - AutoGrade - Oil-Tite! Packaging Type: Card Thread Size: 7/8 in -18 Head Size (SAE/Metric): 1-1/8 in



  • NEEDA PARTS: 65231
  • Chrysler: J0639979
  • General Motors: 445096


  • 1965-1967 Jeep J-3600 - Position: N/A
  • 1963-1965 Jeep J-320 - Position: N/A
  • 1962-1964 Jeep FJ3A - Position: N/A
  • 1963-1965 Jeep J-330 - Position: N/A
  • 1962-1966 Jeep FC150 - Position: N/A
  • 1963-1967 Jeep Wagoneer - Position: N/A
  • 1963-1965 Jeep J-300 - Position: N/A
  • 1964-1964 Jeep FJ3 - Position: N/A
  • 1962-1965 Jeep Tornado - Position: N/A
  • 1965-1967 Jeep J-2800 - Position: N/A
  • 1966-1971 Jeep Jeepster - Position: N/A
  • 1962-1966 Jeep CJ3 - Position: N/A
  • 1962-1967 Jeep Universal - Position: N/A
  • 1963-1965 Jeep J-210 - Position: N/A
  • 1962-1965 Jeep 6-230 - Position: N/A
  • 1966-1968 Jeep CJ5A - Position: N/A
  • 1965-1968 Jeep DJ6 - Position: N/A
  • 1962-1967 Jeep Gladiator - Position: N/A
  • 1965-1967 Jeep J-2600 - Position: N/A
  • 1963-1965 Jeep J-200 - Position: N/A
  • 1965-1967 Jeep J-3800 - Position: N/A
  • 1965-1967 Jeep J-3500 - Position: N/A
  • 1963-1965 Jeep J-230 - Position: N/A
  • 1962-1962 Jeep F4-134 - Position: N/A
  • 1963-1965 Jeep J-220 - Position: N/A
  • 1962-1964 Jeep Utility Wagon - Position: N/A
  • 1962-1971 Jeep CJ6 - Position: N/A
  • 1965-1966 Jeep J-3700 - Position: N/A
  • 1964-1966 Jeep FC170 - Position: N/A
  • 1963-1965 Jeep J-310 - Position: N/A
  • 1965-1971 Jeep DJ5 - Position: N/A
  • 1962-1969 Jeep Universal Truck - Position: N/A
  • 1965-1967 Jeep J-2700 - Position: N/A
  • 1966-1968 Jeep CJ6A - Position: N/A
  • 1966-1971 Jeep Commando - Position: N/A
  • 1962-1966 Jeep Truck - Position: N/A
  • 1962-1971 Jeep CJ5 - Position: N/A
  • 1962-1962 Jeep Utility - Position: N/A
  • 1963-1967 Jeep J-100 - Position: N/A
  • 1965-1967 Jeep J-2500 - Position: N/A
  • 1962-1966 Jeep DJ3 - Position: N/A
  • 1962-1969 Jeep Dispatcher - Position: N/A
  • 1963-1966 Jeep F-134 - Position: N/A
Customer Questions
Will an engine flush clean my pistons?
No, an engine flush is unlikely to clean the pistons.
How to replace engine pistons?
Replacing engine pistons involves removing the engine from the vehicle, disassembling it, removing the pistons, inspecting the engine components, installing the new pistons, reassembling the engine, and testing it. It's a complex process that should only be attempted by experienced mechanics.
When do engine pistons rings go bad?
Engine piston rings can go bad due to wear and tear, inadequate lubrication, overheating, manufacturing defects, or improper installation. Symptoms of failing piston rings include reduced engine power, increased oil consumption, and blue smoke from the exhaust. Regular maintenance and inspection can help identify potential issues.
Why do engine piston rings fail?
Engine piston rings can fail due to wear and tear, inadequate lubrication, overheating, manufacturing defects, or improper installation. Regular maintenance and inspection of the engine can help identify potential issues. Symptoms of failing piston rings include reduced engine power, increased oil consumption, and blue smoke from the exhaust.
Can you replace engine pistons rings without removing the engine?
Replacing engine piston rings without removing the engine is possible but not recommended due to the extensive disassembly required and the risk of damaging other engine components. A full rebuild or overhaul is generally more efficient and effective.
Can I use Dorman parts to replace OEM parts?
Yes, Dorman parts can often be used as replacements for OEM parts, but it is important to carefully compare specifications and ensure compatibility.
How do I install Dorman shift linkage bushing?
To install a Dorman shift linkage bushing, first locate the old bushing and remove it if necessary. Apply lubricant to the Dorman bushing and slide it onto the shift linkage, tapping it into place with a soft tool until fully seated. Check the alignment and function of the shift linkage after installation.
Where is Dorman manufactured?
Dorman is a global automotive parts supplier with manufacturing facilities in the United States, Mexico, Canada, China, and India. Its headquarters and largest manufacturing facility are located in Colmar, Pennsylvania, USA.
Are oil pump gears necessary?
Yes, oil pump gears are essential for maintaining proper engine lubrication in an internal combustion engine.
How do oil pumps work?
Oil pumps work by creating pressure to circulate engine oil throughout an internal combustion engine.
Where is the oil pump located?
The oil pump is typically located inside the engine's lower oil pan or sump.
Why do oil pump failures happen?
Oil pump failures can arise from wear, contamination, poor maintenance, and manufacturing defects, causing inadequate lubrication and potential engine damage.
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