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Contact Information
Address: 580 Old Bristow Rd. Independence, KY 41051
Email: Proweldperformance@gmail.com
Phone: (859) 586-4069
Accessory Drive Components
Item
Part #
Description
1
N605904
Bolt
2
N620480
Nut
3
6A946
Cover
4
17K814
Alternator bracket assembly
5
N811268
Bolts (2 req'd)
6
8620
Accessory drive belt
7
N606543
Bolts (4 req'd)
8
6L266
Timing chain tensioner
9
6268
Timing chain (2 req'd)
10
6M256
Timing chain guide
11
6L266
Timing chain tensioner
12
6L253
Timing chain tensioner arm
13
6268
Timing chain (2 req'd)
14
N804958
Bolt (2 req'd)
15
6B274
Timing chain guide
16
N606527
Bolt
17
19D269
A/C compressor
18
N806184
Bolts (3 req'd)
19
6306
Crankshaft sprocket
20
6L253
Timing chain tensioner arm
21
12A227
Ignition pulse ring
22
6C086
Engine front cover
23
N806177
Bolts (8 req'd)
24
N806300
Studs (5 req'd)
25
6700
Crankshaft front seal
26
6316
Crankshaft pulley
27
N806165
Washer
28
W701512
Stud
29
8A528
Water pump pulley
30
N806282
Bolts (4 req'd)
31
N806177
Bolts (4 req'd)
32
8501
Water pump
33
N808102
Bolt
34
19A216
Beld Idler Pulley
35
N804178
Nut
36
N806300
Harness support bracket
37
N806300
Stud
38
N806155
Bolt
39
6C315
Crankshaft position sensor
40
N806155
Bolt
41
6B288
Camshaft position sensor
42
N808920
Bolts (3 req'd)
43
6C254
Crankshaft extension support pulley
44
10153
Lower support bracket
45
N605909
Bolts (2 req'd)
46
8620
Accessory drive belt
47
N811268
Bolt
48
8B603
Belt idler bracket support
49
N808198
Stud
50
9N491
Hose and tube assembly
General Specifications
Item
Specification
Accessory drive belt
6 ribs
Supercharger drive belt
8 ribs
Torque Specifications
Description
Nm
lb-ft
lb-in
Belt idler pulley bolt
25
18
-
Drive belt tensioner bolt - 3.8L and 3.9L
82
60
-
Drive belt tensioner bolt - 4.6L
10
-
89
Drive belt tensioner bolt - Supercharged engine
25
18
-
Cooling hose mounting bolt
25
18
-
Belt idler support assembly bracket bolts
25
18
-
Air intake scoop bolts
25
18
-
Air intake scoop bracket bolt
25
18
-
Air intake scoop bracket nuts
25
18
-
Air intake scoop bracket throttle body nut
9
-
80
Exhaust gas recirculation (EGR) vacuum regulator solenoid bolts
10
-
89
Engine Coolant Pump or Water Pump
Above: The Modular family has several different Water Pumps to choose from, for the 03-04 Cobra Engine we need the Short Snout Water Pump. There is also a older and newer version of these pumps, we won't the newer version. The newer version has the Pump fins enclosed, which makes for a more effecient Water Pump.
The Engine Coolant Pump is located in the front of the Engine, centered. It is driven by the Accessory Belt Drive and is very important to the Engine's Well being. The 03-04 Cobra Engine makes huge power and that requires a lot of Heat in the Combustion Camber. It's the Water Pumps responsibility to Circulate the Engine Cooant which transfeers the heat from the combustion process to the Engine Coolant so it can be transported to the Radiator, where the cooler air blows through the radiators core to carry away the excess heat. This transaction happens over and over again while the Engine is running. And none of it would work if the Water Pump didn't do it's job.
There are several different Water Pumps in the Modular Family, you have a long and short Pump and old and newer designs. The one we want for our Cobra S/C Engine is the short new design Pump. This new design, where the water Pumps fins are enclosed, does a much better job of moving the Engine Coolant, then the open fin design. Always start a new Engine with a New Water Pump, they are relatively cheap, and it makes no sense to use a used Pump. I have installed both Ford and AC Delco Pumps with great results. There is also a O-Ring that seals the Pump to the Engine Block, this is usually encluded with a new Pump, so make sure you get one.
Water Pump
2R3V-8501
Water Pump Bolts (4 Req'd)
2R3V-8501
Water Pump Pulley
2R3V-8A528
Water Pump Pulley Bolts (4 Req'd)
2R3V-N806282
AC Compressor
Above: The AC Compressors are as much a part of the Cobra engine as anything else. The Drive Pulley is 6mm and there is no reason to re-use a old used Compressor on your new Engine.
The AC Compressor is located on the passengers side down low. It is held in place by three long bolts, and the pulley comes with the Compressor. I like to always use a new AC Compressor, like the Water Pump on a new engine, it just keeps thing on a even scale, and completes the Engine. The 03-04 AC Compressor uses a special manifold adapter, this adapter bolts to the back of the Compressor and allows the AC hoses to attach. These don't come with the new Compressors, so make sure you find one used or new, cause you have to have it. Also, most new compressors NO NOT come with OIL in the Compressor, so make sure you add the correct amount and type befor you use it.
AC Compressor
2R3V-19D269
Compressor Bolts (3 Req'd)
2R3V-N806184
Front Engine Cover or Timing Cover
Above: There is no way around this very, very important part of the Cobra Engine. It is impossible to run the Eaton Supercharger without this piece. Ford still sells them and I vote to just purchase it new and be done with it. The Used ones that do show-up are old and in need of repair, and will end up costing you more then the new one. Also don't forget to get the Bolts and Studs that go with the Front Cover.
While all Modular Front Covers are demensionally the same, it's the lay-out on the front of the cover that is different. The 03-04 Cobra Timming Cover is a uniqe one and is the only Timming Cover that will work with the Supercharged Engine. These Covers are very hard to find used, and bring a pretty penny when they are for sale on web sites like E-Bay. Generally there isn't to much to worry about, but I would stay away from cars that were involved in front end collissions or other simular accidents. I have seen other Aluminum Timming Covers wear in the front seal area, they developed small cracks all around the circumforance of the seal. These Front Engine Covers are still available form Ford, I have bought several and they generally list for around $700.00. When purchased new, the Front Cover comes with a new Belt Tensioner, all three pieces of the Front Cover Gasket and a new Idler Pulley, three items that are never there on a used one, so watch out and don't end up paying to much for a used Front Engine Cover..
There are several bolts and studs that hold the Front Cover in place, but also are made to secure other item that mount in front of the Engine Cover. These are very specific in both length and design, and have to be purchased from Ford.
Engine Front Cover
2R3Z-6019-BF
Bolts (8 Req'd)
2R3V-N806177
Studs (5 Req'd)
2R3V-N806300
Front Cover Bolt Diagram
Item
Part #
Description
1
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
2
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
3
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
4
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
5
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
6
N806300
Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
7
N806300
Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
8
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
9
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
10
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
11
N806177
Bolt, Hex Flange Head Pilot, M8 x 1.25 x 53
12
W706560
Stud, Hex Head Pilot, M8 x 1.25 x 65 — M8 x 1.25 x 16
13
N806300
Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
14
N806300
Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
15
N806300
Stud, Hex Shldr Pilot, M8 x 1.25 x 1.25 x 91.1
Idler Pulley Support
Above: This is the Idle Pulley Support, It comes like you see it, with the Belt Tensioner, idler Pulleys attached. This is a very hard piece to find, but be very carefull that if you do find one, you don't over pay as many on E-Bay have.
The Idler Pulley Support Assembly is a large and very nesseccary piece for the 03-04 Cobra Engine. It is the only modular Engine that uses this important piece, and that makes them scarce and expensive. But be carefull not to confusse the issue, Ford still sells these pieces, and they often sell for more used then you can purchase a new part with all the additional pieces. This is simply a case where the purchaser does not know his subject or the current prices very well, and gets taken because of it. I always purchase this part new, and in my opinion you would be fullish not to.
Belt Tensioner
Above: Both Drive Sytems, Accessory Drive System and Supercharger Drive System, use the same Belt Tensioner. Purchase the Front Cover and Idler Support Bracket new and you don't need to worry about this Item.
If you used my advise you already have this item, it came with the new Front Engine Cover, but if not you will need a new one. Don't even think about going used with this one, it serves a very important role in keeping the Accessory Belt tight. These are very popular on E-Bay and generally sell for around $50.00. The Engine requires two of them, and they are both the same part number,
Belt Tensioner
2R3Z
Idler Pulley
Above: If you need any of the three Idler Pulleys the Drive System requires, why not think about buying one or more of these good looking beautys? For only slightly more then the plain Stock Pulley sells for you could add some pizase and better performance to your 03-04 Cobra Engine.
There are three Idler Pulleys on the Accessory Drive System. They are all the same part number and are all made from stamped steel and have one, centrally located bearing, supporting them. I would like to see you use all new Pulleys, but if you have to purchase them, I would go with an aftermarket brand and not the factory Pulley. The Aftermarket has several vendors that sell very nice Aluminum Billet Idler Pulleys. These are supported by Double-Sealed Ball Bearings and are much stronger then factory pieces. They are also available in different diameters and styles, which realy dress-up the front of the Engine. While E-Bay sells the stock Factory Pulleys for $34.00, you could have a much stronger and better looking Pulley for just $10.00 more.
Idler Pulley
2R3Z-19A216
Drive Belt
The Accessory Drive System uses one Drive Belt, part number 8620. This Belt is the same as the Supercharger Drive Belt and should be bought new. New Belts are not expensive nor hard to get. I have used both Goodyear and Ford belts with success, and would think that as long as you stay with a known brand name, you would do fine.
Drive Belt
2R3Z-8620
Crankshaft Pully
The Crankshaft Pulley is the heart of the Accessory Drive System. This one piece supplies the power to turn all the other parts in the Accessory Drive System. This part is often refeered to as the Balancer or Harmonic Balancer, but Ford never calls it that, only the Crankshaft Pulley, so I'll call it that also. This is a very hard part to find used, and the few I have seen went for what a new Pulley would go for or more! I would say to just purchase this part from the Ford dealer, yes it's expensive, but at least you know what you have. You will also need the center bolt and washer, these I would get from a very well respected manufacturer, ARP. They make quality fasteners for some of the industries most discriminating users. I use them in as many places as I can, youu can never have to much of a Quality Product.
