H190

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Category: Differential

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The Hitachi H190 differential has a 190mm (7.49 inch) ring gear and can handle about 285 lb. ft. of torque, making it suitable for larger V6 or drag racing supercharged 1200s. H190 is the strongest live axle Hitachi fitted to Datsun cars (C200 from pickups is larger), and is available with lightweight aluminium carriers and a variety of stock ratios.

Contents 1 Overview 1.1 Flange 1.2 Size 1.3 Pre-1980 1.4 1980-up 1.5 Counting 2 Gasket 3 Alloy 4 Ratios 5 LSD 6 Widths 7 Swap Notes 7.1 Side Gears 8 Nissan Competition 8.1 S110 8.2 620/720 8.3 Roadster 9 Donor Cars 9.1 Australia 9.2 Japan 9.2.1 LSD 9.2.2 510 9.3 North America 9.3.1 320 9.3.2 520 9.3.3 Roadster 9.3.4 410 9.3.5 510 9.3.6 620 9.3.7 720 9.3.8 S110 9.3.9 S12 9.3.10 810 Wagon 9.3.11 910 Wagon 9.3.12 D21 9.3.13 D21U 9.3.14 D22U

Overview

Flange

H145: scalloped flange, bolt hole rectangle 36 x 50 mm
Post 487206

H150: 45 x 54 mm round or rectangular flange
H165: 45 x 54 mm round or rectangular flange

There are some differences between flanges on H165's, some long (~217.5mm from carrier mounting face to driveshaft flange face), some short (~202.5mm). Depth of hole for centering boss varies also.

H190: 50 x 60 mm, round or rectangular
Post 477495

Size

Measure the gear
Album 25277

H145 measures 145mm
H150 measures 150mm
H165 measures 165mm
H190 measures 190mm

Pre-1980

  B10: H145, 3.900 
 VB10: H145, 4.375 (van/wagon)
  B20: H145, 4.375 S.T.D. / 4.625 Optional (ute/pick-up)
 B110: H145 3.900
VB110: H145 4.111 (van/wagon)
PB110: H165 4.111
 B120: H165 4.111 (ute/truck)
 B210 1974: H145 3.900
 B210 1975-up: H150 3.700 or 3.889
PB210: H165
GB211: H165
 B310: H150 various
  A10: H165 various

1980-up

Axle Codes
H = Hitachi removable gear carrier (pumpkin/centre section)
HA - H145 (145mm diameter ring gear, 5.709 inch)
HB - H150 (150mm diameter ring gear, 5.906 inch)
HC - H165 (165mm diameter ring gear, 6.496 inch)
HD - H190 (190mm diameter ring gear, 7.480 inch) ALUMINUM CARRIER
HE - H190 CAST IRON CARRIER
HF - H190A revised for strength

EXAMPLE: HF38 = H190 with 3.889 ratio was factory fitted

Axle code is on Chassis Identification plate 1980-on, in the engine compartment. Starting in mid-80s, Axle Code is on door-jamb sticker.
Album 21048

Factory LSD has a sticker on the back of the diff housing.

Counting

To verify the ratio in the vehicle matches the original equipment (or build tag), you may count turns of the wheel vs turns of the driveshaft. If slightly less than 4 turns of the driveshaft results in one turn of the wheels, it is a 3.9 ratio. If it takes a bit more than 4 turns, it is a 4.111 ratio.

Even better is to note the stamped numbers on the ring gear. For example, this unit is stamped 39:11
Album 24439

39 divided by 11 = 3.545 ratio
Album 25276

Pinion gear is similarly stamped
Album 25278

Gasket

Center section gasket for H190 carrier.

• 38320-B3002 Gasket-cover $4.13 USD
  • 38320-B3000 GASKET-GEAR CARRIER
• 38320-25670 GASKET-GEAR CARRIER (10)
  • 38320-25660 GASKET-GEAR CARRIER (10)

Compare to:

• 38320-04110 GASKET-GEAR CARRIER H165
  • supercedes 38320-N5000, 38320-N5001

Alloy

35 pound H190 center section.

• Datsun 510 Wagon
• Datsun Fairlady Roadster
• Datsun 320 pickup

click for full size

Ratios

3.364       38100-P0806
3.545 39/11 38100-P0706/38100-V7700
3.700 37/10 38100-77700/38100-A3800/38100-P0606/38100-P0607/38100-V7600
3.889 35/9  38100-61000/38100-A5300/38100-25600
            38100-P0501/38100-P0506/38100-V7500
4.111 37/9  38100-61001/38100-P0306/38100-V7300
4.375 35/8  38100-22501/38100-23500/38100-26000
            38100-B3300/38100-B5500/38100-P0206
4.625
4.875
5.143
5.429

LSD

Limited-Slip Differential units

Widths

• Datsun 320 pickup: 50" in H190 diff
• Datsun V510 wagon: 53" in

Gearset weight is approximatly 8 pounds.

Swap Notes

Since H190 is larger, the driveshaft needs to be a couple of inches shorter.

H190 from 1982-1983 S110 has disc brakes and is a direct bolt-in for a B310 axle.

H190 from 1984 S110 is also a bolt-in but has drum brakes and is a bit wider (about 2").

The S110 units can be used in B110, grind off the 4-link brackets and weld leaf-plates.

Several Datsun owners have swapped an H190 into the Datsun 1200s. The Datsun 320 pickup rear axle is one inch narrower than the Datsun 1200 unit.

Ratsun contains a nice photo essay with general information.

NOTE:

• There are at least four carrier types, which can only fit specific gear ratios
• There are various incompatible axle types/side gears, so swapping center sections doesn't always work

Side Gears

When swapping diff carriers assembled (pumpkin), you may swap the side gears to match your axles.

• 13-spline, Datsun 320 pickup

  

• 23-spline, 510 wagon and most cars

  

• 29-spline, S110 and pickups

  

USA SOURCES

38423-00100 GEAR-SIDE [13 spline]
* Datsun 320 "1200" Pickup 1962-1965

38423-10600
* 411 with 1.3 engine

38423-16300
* Roadster/Sports (Option) 

38423-14600 GEAR-SIDE [23 spline]
* Roadster/Sports non-Option SPL311/SRL311 "1600/2000"
* 411 with 1.6 engine
* 510 wagon
* 810 wagon
* 910 "810/Maxima" wagon

38423-73000 GEAR-SIDE [29 spline] formerly 38423-61000
* S110 "200SX" 1982-1983
* S12 "200SX" 1984 with CA20E
* 520/521
* 620
* 720 some

38423-B4000
* D22U "Frontier" 1998-2000 KA.2WD(-KC) H190
* GC22 "Nissan Van" 1989 C200
* 720 some
* D21 some
* D21U some
* WD21 some

Nissan Competition

1984 Nissan Competition catalog.

S110

The ring and pinion sets listed will fit the 200SX/S110 (from 7/81).

38100-P0806 3.364
38100-P0706 3.545
38100-P0606 3.700
38100-P0506 3.900
38100-P0306 4.111
38100-P0206 4.375
38100-P0106 4.625
38100-Y4006 4.875
38100-B4003 5.143
38100-T3003 5.429

620/720

H190 RING & PINION SETS (FROM 5/76)

[Same as S110 ratios above]

Roadster

H190 RING & PINION SETS

To install a 4.375, 4.625 or 5.125 ring and pinion into a third member equipped with a 3.700, 3.889 or 4.111 ring and pinion a 4.0mm/.157" ring gear spacer must be fabricated. Due to a smaller pinion shaft the 4.875 and 5.874 ring an pinion sts are interchangeable, but cannot be installed into third members equipped with other ratios.

[normal carriers]
38100-77700 3.700 R&P SET
38100-A5300 3.889 R&P SET
38100-25900 4.111 R&P SET

[high ratio carriers]
38100-26000 4.375 R&P SET
38100-77500 4.625 R&P SET
38100-37000 5.125 R&P SET

[special carriers]
38100-20600 4.875 R&P SET
38100-19901 5.874 R&P SET

Donor Cars

Australia

3.900 910 Series 2 Bluebird 29 spline (CA20 engine)
910 Bluebird Wagon (sedans used H165)
3.889 S12 Gazelle AT
3.700 S12 Gazelle MT
4.111 C20 with Z20 engine MT
4.3 C20 with Z20 engine AT
4.111 Vannete 29 spline
1600 Wagon 23 spline
Roadster 23 spline
4.6 early Navara (later ones use Borg Warner)
6.5 diesel truck
320
520
521
620 some
720 some

NOTE: 27 spline axles are only used in 4 pinion works centre LSDs.

Japan

LSD

38420-A9980 3.70-4.11, 4.875-5.874

38420-16330 4.375, 4.625, 5.125

38420-B3400

Differential Assembly
* 38420-N9000 4-pinion
  720 8004-8303 4-pinion 
  S110 8204- HE41.FJ20
* 38420-41W00 2-pinion
  720 8004-8303 2-pinion
  720 8303-

510

510 Wagons and Vans came with a leaf-sprung rigid axles with H190 differential.

W510 Wagon
V510-S Standard Van
V510 Deluxe Van

Catalog C-091
38310-14800 COMP.-CARRIER, gear V&W
38100-22901 SET-GEAR, hypoid (37 T:8 T) [4.625] Van 
38100-22600 SET-GEAR, hypoid (37 T:8 T) [4.625] Van
38100-22501 SET-GEAR, hypoid (35 T:8 T) [4.375] Wagon [W510]
38100-23500 SET-GEAR, hypoid (35 T:8 T) [4.375] Wagon

North America

USA and Canada

Datsun SPL311/SRL311 "Roadster/Sports"
Datsun 410/411
Datsun 510 Wagon
Datsun 320 Pickup
Datsun 520 Pickup
Datsun 620 Pickup
Datsun 720 Pickup
Datsun S110 "200SX" from 1982-1983 (disk brakes)
Nissan S12 "200SX" 1984 (drum brakes)
Datsun 810 wagon  
Datsun 910 wagon "810"
Nissan D21/D21U pickup
Nissan D22 pickup

320

Datsun 320 pickup uses a rear axles 50" in width with H190 diff -- narrower than a stock Datsun 1200 rear axle, making this a low-cost swap for high-power engines. But it uses 6-lug axles.

38100-08700 5.14 gearset

The 320 differential assembly uses 13 spline axles, so if swapping in a different pumpkin, swap the side gears too.

520

J13
Gearset was 39:8 (4.875)
38100-20659 SET-GEAR,HYPOID (39:8)
* superceded 38100-14901 & 38100-14900
38100-20600 SET-GEAR,HYPOID (39:8)

521 with L16
Gearset was 4.375
38100-B5500 SET GEAR HYPOID (35:8)
* superceded 38100-23500
38100-B3300 SET GEAR HYPOID (35:8)

Roadster

SPL311 = 1.6 SR16 engine
SRL311 = 2.0 U20 engine
38100-61000 RING & PINION 1.6L [1600] [3.889]
38100-61001 SP311-U/SPL311 OP. [1600] [4.111] 37/9
38100-25600 GEAR & PINION 1.6L [1600] [3.889] 35/9
38100-A5300 GEAR-SET HYP 1.6L [1600]
38100-77700 RING & PINION 2L [2000] [3.700]

410

1964-1965 410, 1200cc
38100-13201 3-speed OPTION
38100-13225 3-speed 
38100-14301 4-speed OPTION
38100-14325 4-speed

1966-1967 411 (3.889)
38100-A5300 GEAR-SET HYP 1.6L 411
411 OPTION 35:9  38100-14401 SET-GEAR,HYPOID(35T: OP.UT,LUT,WUT,WL UT
38100-61000 RING & PINION 1.6L 411
38100-25600 RING & PINION 1.6L 411

510

510 Wagons came with a leaf-sprung rigid axles with H190 differential.

1967-1973 Datsun 510 (Bluebird)

38310-14600 CASE-CARRIER,GEAR -1171
38310-A3000 CASE-CARRIER,GEAR 1271-
38100-61000 SET-GEAR PINION 35/9 [3.889] WPLA WPZ WPZA WPX WPXA
38100-A5300 SET-GEAR PINION 0770-1171
* superceded 38100-25600 SET-GEAR PINION 35/9 [3.889] -0670
38100-P0501 SET-GEAR PINION 35/9 [3.889] 1271-
38100-A3800 SET-GEAR PINION 37/10 [3.700] WAGON FLOOR SHIFT 1271-

620

Datsun 620 pickup USA came stock with these ratios:

-0576
38100-B3300 35/8 MT
38100-B3201 37/8 AT
* supercedes 38100-B3200

0576-
38100-P0101 37/8 -0775 AT
* superceded 38100-P0100 
38100-P0206 35/8 0578- AT 
38100-P0206 35/8 -0778 OP.MT(EXC CAMPER)
38100-P0206 35/8 0778- CAMPER
38100-P0306 37/9 0778- MT(EXC CAMPER)
38100-P0206 35/8 0578-0678 MT
38100-P0230 35/8 -0748 MT
* supercedes 38100-P0200
38100-P0200 35/8 MT
38100-P0230 35/8 0875-0478 AT

720

Datsun 620 pickup USA came stock with these H190 ratios:

NOTE: From 0183, 4WD often used C200 diff

38100-C6200 4.625      0784-     2WD.HD/W.Z24 
38100-P0106 37/8=4.625 0679-0680 T.LONG.4WD.L20B
38100-P0206 35/8=4.375 0679-0680 (L20B+Z22+Z24).AT + HD/T
                       0679-0680 T.REG.4WD +K/CAB.4WD
                       1182-     2WD.HD/W.Z24
                       0780-1282 T.LONG.4WD.Z22
                       0780-1282 4WD +HD/T
38100-P0306 37/9=4.111 0679-0680 L20B.AT
                       0679-0680 T.LONG.L20B.2WD
                       0780-1082 T.LONG.Z22.2WD
                       0780-1082 Z22.AT
38100-P0501 35/9=3.889 0183-     2WD.SD25
                       0979-     (T.REG+K/CAB).L20B.2WD.MT
                       0780-1282 (T.REG+K/CAB).Z22.2WD.MT
38100-P0506 35/9=3.889 0783-     2WD.AT.Z24
                       0183-0683 4WD.Z24
38100-P0607 37/10=3.70 
38100-P0606 37/10=3.70 0783-     2WD.(T+K/CAB).Z24.MT.F5
                       1182-0683 2WD.AT.Z24
38100-P0706 3.545      1182-0683 2WD.(T+K/CAB).Z24
38100-P0806 3.364      0183-     2WD.Z20

S110

Datsun S110 "200SX" from 1982-1983 (disk brakes)

NOTE: 1980-1981 uses H165

38100-P0607 <> 38100-P0606
38100-P0606 37/10=3.70 0781- Z22E.AT
38100-P0706 39/11=3.54 0781- Z22E.MT

S12

Nissan S12 "200SX" 1984 (1083-1184) w/CA20E engine (drum brakes)

38100-P0506 35/9=3.889 1083-1184 CA20E.AT
38100-P0606 37/10=3.70 1083-1184 CA20E.MT

810 Wagon

810 USA debuted 0876

38100-A3800 37/10=3.70 0876-1177
38100-P0601            1277-0478
38100-P0606 37/10=3.70 0578-1279

910 Wagon

910 USA (Datsun 810/Datsun Maxima/Nissan Maxima) debuted 0180

38100-P0606 37/10=3.70 0782- W.LD28
38100-P0606 37/10=3.70 0782- W.L24E.AT
38100-P0706 39/11=3.54 0780- W.L24E.MT.F5
38100-P0706 39/11=3.54 0780-0682 W.L24E.AT
38100-P0806      3.364 0780-0682 W.LD28

D21

D21 (1185-0894) "Harbody" pickup used H190, C200, CA200, OR H233
* Only gasoline 4-cylinder used H190 or H190A
* Z24.2WD (Z24.4WD used C200/CA200)
* KA24E.2WD (KA24E.4WD used H233 or C200/CA200)

Z24.2WD - M10 RING GEAR BOLTS
38100-P0506 35/9=3.889 1185-1285 Z24.(AT.F4+AT.R4)
38100-P0607 37/10=3.70 1185-0186 2WD.Z24.MT.F5 +Z24.MT.F4

Z24.2WD - M12 RING GEAR BOLTS (F/LSD)
38100-V7500 35/9=3.889 0787-0889 *Z24.(AT.F4+AT.R4) 
38100-V7500 35/9=3.889 1285-0889 (AT.F4+AT.R4)
38100-V7600 37/10=3.70 0787-0192 *2WD.Z24.M5.F5 +*Z24.MT.F4
38100-V7600 37/10=3.70 0186-0192 2WD.Z24.M5.F5 +Z24.MT.F4

KA24E.2WD - M12 RING GEAR BOLTS
38100-V7600 37/10=3.70 0787-0894 KA24E.AT.(R4+F4)
38100-V7700 39/11=3.54 0889-0894 KA24E.MT.F5

D21U

D21U (0894-0897)
* KA24E engine H190, H200 (King Cab), or H233 (4WD)
* VG30 engine used H233

KA24E 2WD except King Cab
38100-V7300 37/9=4.111 0196-0996 AT
38100-V7600 37/10=3.70 0894-0196 AT
38100-V7700 39/11=3.54 0996-0897 MT

D22U

D22U (0997-) "Frontier" pickup 2WD w/KA24DE DOHC engine 1998-2000 
except King Cab
* D22U with VG33E used C200 or C233 
* KA24DE.2WD used H190 1998-2000 except King Cab
* KA24DE 2001- used C200 or C233
* All King Cab used C200 or C233
* All 4WD used C200 or C233

38100-V7500 35/9=3.889 0997-0700 2WD.KA24DE.T.AT
38100-V7600 37/10=3.70 0997-0898 2WD.KA24DE.KC.MT
38100-V7700 39/11=3.54 0997-0499 2WD.KA24DE.MT

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