Differences Between Oil Pumps
The oil pump of the Rover V8 engine, from its production in the 1960s until late 1994, comprises a pair of pump gears which rotate inside a housing in the timing cover. One gear, the idler, is driven by the other, which includes a shaft that is driven off the end of the distributor. The distributor in turn, is driven by a skew gear on the end of the camshaft.
Pre SD1 era Rover V8 engines (including Rover P5, P6 and early Range Rover) feature a pair of 'short' oil pump gears, the driven shaft of which has a slot into which the tooth of the distributor shaft engages.
From 1976 (SD1 era), the oil pump is improved by longer gears, the driven shaft of which is now toothed to engage in a slot in the distributor shaft.
For two reasons, the two types are not interchangeable:-
1. The longer gears of a post 1976 engine will not fit into the housing of a pre 1976 timing cover.
2. The pre 1976 distributor will not engage with the shaft of a later oil pump.
However, timing covers are fully interchangeable, which means that an early engine can benefit from the later oil pump arrangement as long as the whole timing cover, complete with distributor, is fitted.
Alternatively, we supply an oil pump uprating kit (RB7480), specifically for pre 1976 engines, which features a spacer for the oil pump cover in order to accommodate the longer gears supplied in the kit. The gears also feature the early type of distributor engagement slot.
From late 1994, a redesigned timing cover, incorporating an integral crank-driven oil pump, is fitted to Land Rover V8 engines. This supersedes the earlier, distributor driven oil pump. However, the later arrangement, while more efficient, is not a straight swop for the earlier timing cover, as a longer crankshaft nose is required to drive the oil pump. In addition, ancillaries, such as water pump, alternator and power steering pump would have to be changed.

Oil Filter;
Saloon/Sports
Up to 1976 (pre SD1 type) - (1) - GFE145
1976 Onwards - (1) - GFE187
4 x 4
Early Engines - (1) - RTC3186
Engine nos. 341, 355 & 359.
All other engines - (1) - ERR3340
Including Series 2 Range Rover.

Oil Pump Cover;
Early Engines - (1) - 602485
Pre SD1 type engines.
All Other Engines - (1) - BHM1554
Up to late 1994.
Complete with relief valve & spring, plus oil pressure switch.

Oil Pump Cover/Remote Take Off - (1) - RO1105
Very low profile oil pump cover & relief valve housing for maximum clearance. Use with remote oil filter mounting kit.
Remote Oil Filter Mounting Kit - () - RB7116
Allows mounting of oil filter away from engine.
Kit includes filter housing, hoses & mountings.
Not suitable for Series 2 Range Rover.
Oil Pump Repair Kit - (1) - RTC2044A
Suitable for all engines with separate oil pump (pre 1994).
Includes pressure relief valve, spring & gasket.
Uprated Pressure Relief Valve Spring - (1) - RB7457
For all separate oil pump models (pre 1994). Increases oil pressure by approximately 10psi.

Gear With Shaft - oil pump;
Early Engines - (1) - 602018
Short gear with slotted shaft.
All other engines - (1) - ERC1351A
Longer gear with toothed shaft.

Idler Gear - oil pump;
Early Engines - (1) - 602017
Short gear.
All Other Engines - (1) - 614037
Long gear.

Uprating Kit - oil pump - (1) - RB7480
Early models only (pre SD1).
Kit includes spacer plate and longer gears to uprate early pumps to later specification. Increases pressure and volume.
Gasket - oil pump cover - (1) - 90602072A

Bolt - pump mounting;
7/8" - (3) - 602910
1 1/4" - (2) - 602912
1 9/16" - (1) - 602913

Blanking Plug - oil pump - (1) - 151203
Pressure switch outlet.
Washer - (1) - 243967
For blanking plug.

Oil Pressure Switch;
TR8 - (1) - GPS117
SD1
3 Prong Type - (1) - GPS123
Single Prong Type - (1) - GPS110
Range Rover - (1) - STC4104

Washer (for pressure switch) - (1) - 243967

Oil Pressure Transmitter - early vehicles;
SD1 Engines
'0 - 100' Psi Gauge - (1) - DRC242
'0 - 60' Psi Gauge - (1) - DRC2479A
Range Rover
Early Engines - (1) - 555947
Engine nos. 341, 355 & 359.
Other Engines (where fitted) - (1) - DRC2479A

Washer (pressure transmitter) - (1) - 243967

Oil Temperature Transmitter;
Where fitted.
For 120°c Gauges - (1) - 560794
For 140°c Gauges - (1) - 623050
For 'C - Max' Gauges - (1) - PRC2236

Adaptor - oil temperature transmitter;
Range Rovers up to 1982 - (1) - 611514
Range Rovers from 1982 on - (1) - 273166

Oil Pressure Gauge Kit - (1) - RX1351OIL
Aftermarket capillary type. Includes gauge & fittings.
Oil Pressure/Water Temp Gauge Kit - (1) - RX1351OIL-WATER
As above, dual function gauge.
Bracket - oil pressure gauge - (1) - RB7050

Oil Pump Priming Tool;
For efficient priming of the oil pump before initial start-up.
Priming tool engages with the oil pump shaft through the distributor aperture in the timing cover (requires removal of distributor).
Oil pump can then be primed using an electric/cordless drill. No need for petroleum jelly.
NB. With the rocker covers removed, a visible oil supply to the rocker gear is confirmation that the system is primed.
Early Type Oil Pump Shaft - (1) - RX1431EARLY
Slotted shaft (see illustration).
Late Type Oil Pump Shaft - (1) - RX1431LATE
Toothed shaft (see illustration).

Oil Cooler (engine)

Universal Oil Cooler

Oil Cooler Kit;
Includes radiator, hoses and all fittings.
Saloon/Sports - (1) - RB7260
Range Rover - (1) - RA1089
All models up to 1990.

Thermostat - oil cooler - (1) - RS1456

Range Rover 3.9 Oil Cooler & Components

Oil Cooler Take-Off - 3.9 engine;
Up to VIN JA624755 (1992) - (1) - ERC8501
From VIN KA624756 (1993) - (1) - ERR2490

Adaptor - oil filter - (1) - ERC2226
'O' Ring - (1) - ERR852

Oil Cooler Hose;
Early 3.9 Engine - up to 1991 (VIN HA)
Engine to Cooler
To VIN FA - (1) - NTC6289
VIN GA onwards - (1) - NTC5972
Cooler to Engine
To VIN FA - (1) - NTC5620
VIN GA onwards - (1) - ESR137
3.9 & 4.2 - 1992 (VIN JA) onwards
Engine to Cooler
To VIN JA624755 - (1) - ESR356
VIN KA (1993) to LA (1994) - (1) - ESR1672
VIN MA (1995) onwards - (1) - PBP101150
Cooler to Engine
To VIN JA624755 - (1) - ESR355
VIN KA (1993) to LA (1994) - (1) - ESR1671
VIN MA (1995) onwards - (1) - PBP101160

Adaptor - hose to radiator;
All models.
To VIN JA (1992) - (2) - NTC3858
From VIN KA (1993) - (2) - ESR1262

Adaptor - pump take-off to hose;
All models.
To VIN JA (1992) - (2) - ETC9064
From VIN KA (1993) - (2) - ESR1239

Sealing Ring - adaptor;
To VIN LA (1994) - (2) - ETC9065
VIN MA (1995) onwards - (4) - ESR1594L

Oil Cooler - Series 2 Range Rover;
4.0 Litre - (1) - ESR3204
4.63 Litre - (1) - ESR3205

Oil Cooler Hoses - Series 2 Range Rover;
Engine to Cooler - (1) - ESR4415
Cooler to Engine - (1) - ESR2697

Sealing Ring - cooler hoses - (4) - ESR2237