Shop By Product Matching "National"
Choose your Transmission for your 1978 Mercury Grand Marquis
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- Axle Repair Bearing
- Axle Repair Bearing with 8.7 (in) Ring Gear
- National RP-5707 Axle Repair Bearing
- Product Attributes:
- Width (Inch): 1.457
- Bore (Inch): 1.399
- Outside Diameter (Inch): 2.2948
- Part Description: Axle Repair Bearing
- Designed to be used on worn axle shafts, National® axle repair bearings are manufactured with premium materials for durability and long-lasting performance.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
1563, B350, BRK1563, BS226373, R1563, RP1563, RP5707, TRP1563TAV
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Rear |
- Taper Bearing Cone
- with 8.7 (in) Ring Gear with Ford Axle Bearing Only
- National LM102949 Taper Bearing Cone
- Product Attributes:
- Cone Bore (Inch): 1.7812
- Cone Radius (Inch): 0.1400
- Cone Radius (MM): 3.5560
- Cone Length (Inch): 0.7800
- Cone Bore (MM): 45.2420
- Cone Length (MM): 19.8120
- Part Description: Taper Bearing Cone
- Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
0927270, 10033471, 15637269, 2881194, 399933C91, 400987C91, 408006C91, 4637705, 506056, 52009574, 52069915AA, 5356661, 550966, 565965, 7J8210, 9436776, 9440844, BC2Z4221A...VIEW MORE
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Rear |
- Taper Bearing Cone
- with 9 (in) Ring Gear with Ford Axle Bearing Only
- National LM102949 Taper Bearing Cone
- Product Attributes:
- Cone Bore (Inch): 1.7812
- Cone Radius (Inch): 0.1400
- Cone Radius (MM): 3.5560
- Cone Length (Inch): 0.7800
- Cone Bore (MM): 45.2420
- Cone Length (MM): 19.8120
- Part Description: Taper Bearing Cone
- Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Rear |
- Oil Seal
- National 331107N Oil Seal
- Product Attributes:
- Inside Diameter:
- 2.000
- 50.800
- Shaft (Inch): 2.000
- Sealing Material: Silicone
- Width (Inch): 0.375
- Unit of Dimension: Inch
- Housing Bore (Inch): 2.746
- Outside Diameter:
- 2.750
- 69.850
- Outside Diameter (Inch): 2.750
- Shaft (MM): 50.800
- Part Description: Oil Seal
- Inside Diameter:
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
This Part Fits the Following OEM/Substitute Numbers:
194358, 19807, 248C20006, 29398, 331107N, 46165, 480198, 59520S, 6150037, 84651, 84651H, 84651N, A81101P, A81101S, B29844, B9A77837A, C0DP7A248A, C2AP7A248A...VIEW MORE
Additional Fitment Information:
| Vehicle | Transmission | Position | Trans. Speed | Transmission Manuf. Code |
|---|---|---|---|---|
| 1978 - Mercury Grand Marquis | Automatic | Front | 3 | C6 |
- Oil Seal
- with Ford C4 Transmission
- National 331107N Oil Seal
- Product Attributes:
- Inside Diameter:
- 2.000
- 50.800
- Shaft (Inch): 2.000
- Sealing Material: Silicone
- Width (Inch): 0.375
- Unit of Dimension: Inch
- Housing Bore (Inch): 2.746
- Outside Diameter:
- 2.750
- 69.850
- Outside Diameter (Inch): 2.750
- Shaft (MM): 50.800
- Part Description: Oil Seal
- Inside Diameter:
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Additional Fitment Information:
| Vehicle | Transmission | Position | Trans. Speed |
|---|---|---|---|
| 1978 - Mercury Grand Marquis | Automatic | Front | 3 |
- Wheel Seal
- National 6815 Wheel Seal
- Product Attributes:
- Shaft (Inch): 1.940
- Width (Inch): 0.250
- Redicoat: Yes
- Flanged Outside Diameter (Inch): 2.700
- Inside Diameter:
- 1.940
- 49.280
- Flanged Outside Diameter (MM): 68.580
- Unit of Dimension: Inch
- Housing Bore (Inch): 2.500
- Outside Diameter:
- 2.505
- 63.630
- Outside Diameter (Inch): 2.505
- Shaft (MM): 49.280
- Part Description: Oil Seal
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
12303280, 19013, 19214, 19219, 19221, 2067206, 23216004.5, 2620344, 290-50, 3580975, 417.61000, 4319221, 46008, 47419, 47974, 52-21-0348, 52-21-0356, 55131...VIEW MORE
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Front Inner |
- Taper Bearing Cone
- with 8.7 (in) Ring Gear with Ford Axle
- National M802048 Taper Bearing Cone
- Product Attributes:
- Cone Bore (Inch): 1.6250
- Cone Radius (Inch): 0.1400
- Cone Radius (MM): 3.5560
- Cone Length (Inch): 1.0100
- Cone Bore (MM): 41.2750
- Cone Length (MM): 25.6540
- Part Description: Taper Bearing Cone
- Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
-
Suggested Purchase Quantity: 2
- Most jobs typically require 2 of this item.
This Part Fits the Following OEM/Substitute Numbers:
02800484, 0927090, 1160037, 1314773, 153835, 15665236, 15665281, 18435, 2140285, 231340, 2800484, 3172563, 455387C1, 455387C91, 4723145, 566000, 597570C91, 62AX460...VIEW MORE
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Rear Inner |
- Oil Seal
- Long Boot with 1.250 (in) Width
- National 7300S Oil Seal
- Product Attributes:
- Shaft (Inch): 1.685
- Sealing Material: Polyacrylate
- Width (Inch): 0.421
- Overall Width with Side Lip (Inch): 1.250
- Redicoat: Yes
- Overall Width with Side Lip (MM): 31.750
- Flanged Outside Diameter (Inch): 2.850
- Flanged Outside Diameter (MM): 72.390
- Inside Diameter:
- 1.685
- 42.800
- Helix Type: Counter-clockwise-spiral Lip Design
- Unit of Dimension: Inch
- Housing Bore (Inch): 2.500
- Outside Diameter:
- 2.506
- 63.650
- Outside Diameter (Inch): 2.506
- Shaft (MM): 42.800
- Part Description: Oil Seal
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
This Part Fits the Following OEM/Substitute Numbers:
02400300, 03515383, 04531216, 04531216 AB, 04626590, 04741119, 05016760AA, 1300044002, 16156, 16567, 16727, 2400300, 29348, 3515383, 4531216, 4531216AB, 4626590, 47362...VIEW MORE
Additional Fitment Information:
| Vehicle | Transmission | Trans. Speed | Transmission Manuf. Code |
|---|---|---|---|
| 1978 - Mercury Grand Marquis | Automatic | 3 | FMX |
- Differential Pinion Seal
- with 9 (in) Ring Gear with Ford Axle
- National 7044NA Differential Pinion Seal
- Product Attributes:
- Shaft (Inch): 1.812
- Width (Inch): 0.455
- Flanged Outside Diameter (Inch): 3.310
- Inside Diameter:
- 1.812
- 46.020
- Flanged Outside Diameter (MM): 84.074
- Helix Type: Clockwise-spiral Lip Design
- Unit of Dimension: Inch
- Housing Bore (Inch): 3.000
- Outside Diameter:
- 3.005
- 76.330
- Outside Diameter (Inch): 3.005
- Shaft (MM): 46.020
- Part Description: Oil Seal
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
This Part Fits the Following OEM/Substitute Numbers:
18264, 18833, 2067214, 29228, 30015206, 46093, 46156, 57421, 7044NA, 84630, 84710, A46818, A46818P, A46818S, AJ4676A, B8A4676B, C0MW4676A, C2AW4676A3...VIEW MORE
Additional Fitment Information:
| Vehicle | Position |
|---|---|
| 1978 - Mercury Grand Marquis | Rear |
- Oil Seal
- with Ford C4 Transmission
- National 7692S Oil Seal
- Product Attributes:
- Shaft (Inch): 1.500
- Sealing Material: Polyacrylate
- Width (Inch): 0.420
- Overall Width with Side Lip (Inch): 1.458
- Redicoat: Yes
- Overall Width with Side Lip (MM): 37.030
- Flanged Outside Diameter (Inch): 2.640
- Flanged Outside Diameter (MM): 67.056
- Inside Diameter:
- 1.500
- 38.100
- Helix Type: Counter-clockwise-spiral Lip Design
- Unit of Dimension: Inch
- Housing Bore (Inch): 2.372
- Outside Diameter:
- 2.376
- 60.350
- Outside Diameter (Inch): 2.376
- Shaft (MM): 38.100
- Part Description: Oil Seal
- National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
This Part Fits the Following OEM/Substitute Numbers:
0500-044078, 13-32-044-007, 1332044007, 14900, 14978, 15566, 1P7657, 29358, 47361, 480148, 48184, 7114978, 7692S, 92222, B29038, B37042, C1AP7052A, C2AP7052A...VIEW MORE
Additional Fitment Information:
| Vehicle | Transmission | Trans. Speed |
|---|---|---|
| 1978 - Mercury Grand Marquis | Automatic | 3 |
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