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Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. For most all applications, we recommend the high volume unit, M63HV. Aside from the billet and aluminum racing pumps made by Milodon, Keith Black and others, Melling is THE only source for stock replacement type cast iron pumps. Don't forget the attaching bolts for your new pump also.

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Item #

Description

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M63HV

Melling M-63HV High Volume Oil Pump - New
Melling M-63HV High volume oil pump assembly. For engines with extended capacity (deep sump) pans, we recommend the Melling high volume pump. Completely brand new, assembled and ready to install. Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. Aside from the billet and aluminum racing pumps made by Milodon, Keith Black and others, Melling is THE only source for stock replacement type cast iron pumps. Don't forget gaskets and attaching bolts as well (listed separately.)

In Stock

M63HP

Melling M-63HP High Pressure Oil Pump
Melling M-63HP High Pressure oil pump assembly. For engines which have factory capacity oil pans, we have found that the high volume pump can sometimes suck the pan dry, resulting in bearing damage. For those factory capacity (non deep sump) engines, the high pressure pump is a great alternative. You still get the added benefit of oil which is being pumped at a higher pressure, without the added volume which can suck the smaller capacity pans dry. Completely brand new, assembled and ready to install. Currently, the only manufacturer of aftermarket oil pumps for the big block Chrysler is Melling Engine Parts. Melling has been in business since 1947, for over 6 decades. They currently manufacture over 3 million oil pumps every year. Don't forget gaskets and attaching bolts as well (listed separately.)

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200-1179

DeLuxe Engine Priming Tool
Our new "DeLuxe" engine oil priming tool is a super cool item that every Mopar guy should have in their toolbox. Featuring a CNC machined 6061 Aluminum housing with sealed ball bearings, this pops into the distributor hole and holds the priming rod exactly straight. But more importantly, it takes all the pressure off the oil pump rotors. The intermediate shaft in a big block Mopar is designed to "float" above the oil pump gears. Normally it's recommend to check for .050"-.070" of clearance between the hex end (bottom) of the intermediate shaft and the bottom of the oil pump gear during assembly. If there is no space there, and the shaft is bottoming out into the gear, it will press on the gear, causing it to grind into and score the oil pump cover. With a standard priming tool, it's very hard to take the pressure off of the tool when you've got a large electric 1/2" drill hanging off it it. With the adjustable collars on this tool, you can set the endplay exactly where you want it. And the adjustable collars also allow you to use it with any engine type, such as RB, B or even small block engines!

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200-1177

Oil Pressure Relief Valve Spring - High Pressure
We offer these high pressure oil pump relief valve springs. These are the same springs which used to be sold by Mopar Performance and can be used in any pump to increase the pressure. These are the same springs supplied by Melling in their M63HV (high volume) and M63HP (high pressure) pumps. These springs will "generally" produce about 70 PSI at above idle RPM's, however pressure can vary greatly depending on bearing clearance, oil viscosity and a host of other factors, so every engine can be different. We recommend using our 200-1093 adjustable oil pressure regulator (along with this spring) to dial in your oil pressure exactly where you want it to be. This is best to do with a drill while priming your engine.

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200-1176

Oil Pressure Relief Valve Plunger
We offer the hard to find oil pressure relief valve plunger. Great for replacing worn out, missing or damaged originals. Originally sold as Chrysler part number 2120764 and 2463541. Shown as item #9 (circled in red) in the parts diagram.

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200-1174

Adapter, Oil pump cover to oil filter base
We offer this hard to find adapter, which screws into the front of the oil pump and allows the oil filter to screw on. Great for replacing missing or damaged originals. Originally sold as Chrysler part numbers 1739619 and 4095283. Shown as item #5 (circled in red) in the parts diagram.

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200-1140

Engine Block Oil Passage Enlargement Drill Bit 12
Big block Mopars generally have a very good oiling system from the factory. However, one easy modification recommended by Mopar Performance is to enlarge the passages which go from the passenger side main oil galley to the main bearings. This allows extra oil to both the main and rod bearings, and only takes a few minutes to do with any hand drill. We carry the special 12" long drill bit required, which should be a standard part in any mechanic's tool box who is building high performance big block Mopar engines. Click on the "view additional images" button to see a diagram of which exact oil passages to enlarge with this drill bit.

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200-1138

Oil Pump Priming Shaft
Our oil pump priming shafts are perfect for priming your engine before that first startup. These specially hardened steel priming shafts fit on any 3/8 in. or larger drill and will pressurize oil galleys to ensure against dry starts and ruining your engine. Don't fire up that engine without pre-lubing (priming) it thoroughly with oil and our oil pump priming shafts. Compare to Mopar Performance P4286800.

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200-1093

Adjustable Oil Pressure Regulator
Our new adjustable oil pressure relief valve is a great accessory for your big block Mopar. This unit simply screws in and replaces the original plug which holds in the oil pressure relief plunger and spring. This plug is drilled and tapped in the center with an adjusting screw which can be screwed in or out as desired. The screw is surrounded by a special liquid tight o-ring seal to eliminate leaks, and held in place by a nylon lock nut & washer. Screwing the plug in will put more pressure on the relief spring and raise the oil pressure, while screwing the plug out will release the pressure on the spring, and cause the oil pressure to drop. You can use this to adjust your oil pressure where you like it (within a reasonable range), even while the engine is running! (Challenge your Chevy buddies to try that one!) Works great for offsetting pressure loss or gain from specific bearing clearances, certain oil viscosities, etc, etc. Works with ALL oil pumps including factory pumps, aftermarket Melling pumps and Racing style billet aluminum pumps.

In Stock

144-1002

Oil Pump Gasket
We now offer replacement oil pump gaskets. For some strange reason, these are not offered separately or included in ANY gasket sets from any of the major gasket suppliers such as Fel-pro, Victor, Rol, etc, and they are nearly impossible to find. Many of the gasket companies list "Oil Pump Gasket" in their catalogs, but under the description, the part is listed as an "o-ring", so it is actually the standard rubber o-ring which fits around the drive area of the pump, not the gasket. So, we've sourced these hard to find gaskets and now offer them for sale separately. Another "pain in the butt" big block Mopar problem made simple and inexpensive by 440 Source!

In Stock

138-1018

Oil Pressure Switch - W/ Light
We offer oil pressure sending units. There were two different types used. This one is for cars which came from the factory with oil pressure "Idiot lights" (not gauges.) Use the other type (listed separately) for cars which came with factory gauges.

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138-1017

Oil Pressure Sending Unit - W/Gauge
We offer oil pressure sending units. There were two different types used. This one is for cars which came from the factory with oil pressure gauges (not lights.) Use the other type (listed below) for cars which came with idiot lights.

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138-1005

Wix Extra Capacity Oil Filter
We also offer these hard to find EXTRA CAPACITY genuine Wix oil filters. The canister height on these has been increased an extra 1 1/2 inches, to about 7 inches to make sure the oil pump has plenty of capacity. Other than a deep sump oil pan, this is the only way to increase the capacity of your oil system, and it's kept right at the supply side of the oil pump, just where it's needed most. A nice detail and an inexpensive way to get a little extra oil that most builders overlook. Don't forget to check to make sure you have clearance in the chassis for the extra length.

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138-1004

Oil Filter - 5" long
We offer these factory replacement type oil filters, and we've found them to be of good quality. These are the standard 5" long version.

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110-1004

Billet Aluminum Oil Filter - ReUsable
Our new billet aluminum reusable oil filter will last a lifetime. Never buy another oil filter again. The two piece housing unscrews to reveal a washable filter element of finely woven stainless steel mesh. These fiter all particles down to 45 microns, and should be washed every 3000 miles. Also features full o-ring seals and integral magnet to trap any large particles (great for inspection during cleaning.) A super nice product now available at a fraction of the price of similiar units on the market. Click on "View additional images" button to see more pictures of the filter element, etc.

In Stock

109-1573

Oil Pump O Ring Rebuild Kit - Nitrile - For Cast Iron Pumps
We now carry these convenient O-ring kits for when oil pumps are being rebuilt and/or disassembled. These kits include all three O-rings used in a big block Chrysler oil pump. The small thin one which seals the neck of the pump to the engine block, the small thick one which seals the oil passage from the pump body to the cover, and the large one which seals the rotor gears to the cover. Avoid oil leaks and blowouts with this easy to change and economically priced kit. These fit Melling and other similar style CAST IRON pumps, including standard, high pressure and high volume.

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109-1565

Bolt Kit - Oil Pump - High Pressure or Stock- Performance 12PT
Our Performance 12 point bolt kits are a nice looking option that features grade 8 strength, black oxide coating, and with a price that doesn't break the bank. This kit includes all the bolts you need to attach a factory oil pump, Melling stock replacment (M63) or Melling HIGH PRESSURE (M63HP) Oil Pump to the engine block. Custom matching, small diameter washers are also included with this kit.

In Stock

109-1561

Bolt Kit - Oil Pump High Volume (M63HV) - Performance 12 PT
Our Performance 12 point bolt kits are a nice looking option that features grade 8 strength, black oxide coating, and with a price that doesn't break the bank. This kit includes all the bolts you need to attach a Melling HIGH VOLUME (M63HV) Oil Pump to the engine block. Custom matching, small diameter washers are also included with this kit.

In Stock

109-1543

Oil Pump O-ring for M63HV or M63HP
This is the replacement o-ring which fits around the shaft of the oil pump which slides up into the block. Great for replacing missing, damaged or dried out/cracked originals.

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109-1528

High Strength Bolt Kit for High Pressure or Stock Oil Pump
We offer this bolt kit for Melling M63HP HIGH PRESSURE or the factory stock Oil Pumps. We've researched the exact size needed, sourced the bolts in a high strength Grade 8 fully plated version, and packaged them into a neat kit complete with plated split washers, just like the factory used.

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109-1502

High Strength Bolt Kit for High Volume Oil Pump - New
Bolt kit for Melling M63HV High Volume Oil Pump.

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Melling M-63HV High Volume Oil Pump - New

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Melling M-63HP High Pressure Oil Pump

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DeLuxe Engine Priming Tool

In Stock

Oil Pressure Relief Valve Spring - High Pressure

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Oil Pressure Relief Valve Plunger

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Adapter, Oil pump cover to oil filter base

In Stock

Engine Block Oil Passage Enlargement Drill Bit 12

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Oil Pump Priming Shaft

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Adjustable Oil Pressure Regulator

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Oil Pump Gasket

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Oil Pressure Switch - W/ Light

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Oil Pressure Sending Unit - W/Gauge

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Wix Extra Capacity Oil Filter

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Oil Filter - 5" long

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Billet Aluminum Oil Filter - ReUsable

In Stock

Oil Pump O Ring Rebuild Kit - Nitrile - For Cast Iron Pumps

In Stock

Bolt Kit - Oil Pump - High Pressure or Stock- Performance 12PT

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Bolt Kit - Oil Pump High Volume (M63HV) - Performance 12 PT

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Oil Pump O-ring for M63HV or M63HP

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High Strength Bolt Kit for High Pressure or Stock Oil Pump

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High Strength Bolt Kit for High Volume Oil Pump - New

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