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Datsun 1200 uses a tradition wet-sump oil pan, holding about 2.5 quarts of oil. It is a sheet metal part that plays no structural function. It is a front-sump design.

1 Oil Capacity
2 Drain Plug
3 Part Numbers
- 3.1 USA
4 Gasket
5 Early Blocks
6 1974 up Blocks
7 FWD Models
8 Alloy Pans
9 Nissan Competition Parts

Oil Capacity

Datsun 1200
* Oil pan: 2-7/8 U.S. qts., 2-3/8 Imper. qts. (2.7 L)
* Oil filter: 1-1/8 U.S. pints, 1 Imper. pint. (0.54 L)

Others:
* A15 oil: 2.8 liter
* A14 oil: 3.2 liter

The exact amount depends on the specfic oil filter used. Nissan filters come in several different sizes.

Drain Plug

Thread Size; M16.4-1.33; Under-Head Length: 12.00mm; Head Size: 21mm; Head Style: Flanged Hex

11128-69200 PLUG-DRAIN $3.57 USD
Beck/Arnely 016-0058
Dorman 90039
090039, 0900391, 1112869200, 11128U8000, 365235, 65235

Interchange

Datsun Roadster 1600 R16 engine
Datsun Roadster 2000 U20 engine
L-series/Z-series/CA18ET/SD25 engine
1986-1989 Nissan D21 KA24 engine

Part Numbers

USA

B110 USA RAW LIST

11110-H1001 ASSY-PAN OIL 1 A12 - NLA 
11119-61000 SEAT-DRAIN PLUG 1 A12 - $1.67 
11128-69200 PLUG-DRAIN 1 A12 - $3.57 
11026-61000 GASKET-DRAIN PLUG 1 A12 - $1.60 
11130-18002 SEAL-OIL OIL PAN FRONT 1 A12 - $1.29 
11131-18002 SEAL-OIL OIL PAN REAR 1 A12 - NLA 
11132-18001 GASKET-OIL PAN RH 1 A12 - $4.42 
11133-18001 GASKET-OIL PAN LH 1 A12 - $4.08 
08110-61410 BOLT M6 FIXING OIL PAN 1 12 A12 - $0.32 
11025-18000 STUD-LOCATING OIL PAN GASKET 4 A12 - $0.58 
08915-13610 WASHER-LOCK FIXING OIL PAN 1 16 A12 - $0.72 
08911-1062A NUT M6 FIXING OIL PAN 4 A12 08911-10610 $0.10 
08911-10610 NUT M6 FIXING OIL PAN 4 A12 - superceded 
11140-H1002 GAUGE-OIL LEVEL 1 A12 - superceded 
11140-H1003 GAUGE-OIL LEVEL (dipstick) 1 A12 0271- 2 11140-H1002 $7.82

Gasket

NISSAN gaskets are in 4 pieces:
* 11130-18002 SEAL-OIL OIL PAN FRONT B110 - $1.29 
* 11131-18002 SEAL-OIL OIL PAN REAR B110 - NLA 
* 11132-18001 GASKET-OIL PAN RH B110 - $4.42 replaced by 11132-H1000
* 11133-18001 GASKET-OIL PAN LH B110 - $4.08 replaced by 11133-H1000

Later they went to a SET:
* 11132-H5025 GASKET SET-OIL PAN 
  B210/B310/B120 A12,A12A,A13,A14,A15 1973 to 1994
  includes:
  * 11130-18002 front
  * 11131-18002 rear
  * 11132-H5000 right 
  * 11133-H1000 left <> 11133-18001 (change 0674)

Rockauto.com

DNJ PG604
Beck/Arnley 0340380 1971-1982 A-series engines A12/A12A/A14/A15
Victor/Reinz OS30055 
* replaces 11121-H5025, 11121-H5220, 11132-H5025
Fel-Pro OS20074C-1

The Datsun Factory Service Manual says to use sealer on both sides of the oil pan gasket, "especially on the front and rear portions of the pan". I believe the original was a cork gasket.

Oil pan side rails, cork or otherwise, needs no extra sealer. What it needs is:

ensure the pan flange is flat. Many have been overtightened and won't seal correctly until straightened
a dab of RTV sealer on the ends where the half-round gaskets meet the rail-sides. Do not put very much on.
Do not overtighten. Factory torque is really low (they are only 6mm bolts). Tighten them to spec, then go round again and retighten.

Torque spec
0.4 to 0.6 kg-m
2.9 to 4.3 ft-lb
35 to 52 inch-lb

Early Blocks

1967-1973 - front distributor engine blocks

Front Sump (B10 and B110 interchange)

Newer pans from Datsun B310 will fit the older A12. When the distributor was moved back for 1974 there was a change in the pan rail shape under the oil pump area which may prevent interchangeability between older oil pans and newer engines.

B110 pan

B10 pan - notice seam down the middle

The B10 pan has no stiffening ridges, which make for a noisier pan.

A12 pan with stiffening ridges

1974 up Blocks

1974-up - mid-distributor engine blocks. All the A-series pans bolt to all A-series engines, but be sure to get the matching dipstick, dipstick tube and oil pump strainer to go with the pan.

Front sump A12, A12A, A14
* 11110-H5000 OIL PAN [same as JDM B210] 
Mid-sump (North American B210)
* 11110-H7201 ASSY-PAN OIL
** Replaces 11110-H7201, 11110-H6200
A15 front sump pan with bulges, will retro fit into other A-series mid-dizzy engines.
* 11110-H9700 OIL PAN [unique to A15]

The lack of clearances bulges on the "B" type pans prevents use on the A15, however the presence of bulges on the A15 pan does not interfere with its use on other rear dist engines.

Beware of using an early A-series pan on late engine.

Late pan -> all engine
Early pan -> early engines only

North American B210 engines (A13 & A14) used a mid-sump (center sump) design.

FWD Models

FWD A-series (Cherry & Pulsar E10, F10, N10)

1970-1974 Nissan E10 (Cherry)
1974-1978 Nissan F10 (Cherry, Datsun F10)
1978-1981 Datsun N10 (Cherry/Pulsar/310)

Cast aluminum front sump

11110-M0100 JPN E10 PAN ASS'Y-oil (to '74-6)
11110-M0101 JPN E10 PAN ASS'Y-oil (from '74-7)
11110-M4965 F10 USA ASSY-PAN OIL 1176-
superceded 11110-M3000 F10 USA -1076
11110-M6660 N10 USA PAN ASSY-OIL 0880-0781 A15S
11110-M6660 N10 USA PAN ASSY-OIL 0881-0780 A14S
superseded 11110-M7000 N10 USA 0878-0780 A14S

オイル　パン

Transmission fits under the engine:

Alloy Pans

FWD A12 part, section above

Tomei

Dry sump pan

Chromed pan

Custom arumi pan

Nissan Competition Parts

From 1984 Nissan Competition Catalog

99996-H1050 B210 COMPETITION OIL PAN Completely baffled with special one-way pick-up tube designed to keep competition Oil pump primed
99996-H1052 1200/210 COMPETITION OIL PAN Specifications same as 99996-H1050
99996-H1135 SPECIAL OIL PAN GASKET Seals better than the stock gasket and can be reused when properly installed
11128-H2375 ADAPTER/OIL TEMP SENDING UNIT Will adapt a Stewart/ Warner manual oil temperature sending unit to any stock oil pan

Reference: 1984 Nissan Competition Catalog

Alloy Pan