Full Gasket Set for Toyota Conquest RSi & Corolla RSi 4A-GE 16V (1986-1988) - FSTO40810SA

Vehicle Fitment & Part Details

This full gasket set (SKU FSTO40810SA) fits the first-generation Toyota 4A-GE 16-valve small-port engine in the 1986-1988 Toyota Conquest RSi hatchback and Toyota Corolla RSi sedan sold in South Africa. The kit includes the cylinder head gasket, crankshaft seals, and valve stem seals - everything needed for a top-end refresh or rebuild. The oil sump gasket is not included and must be ordered separately if you are dropping the sump. Cross-references to Toyota OE 04111-16020 series, Payen GN390, and Victor Reinz 01-52573-01.

Key Details

SKU

FSTO40810SA

Component

Full Gasket Set (Head + Lower Engine Seals)

Engine

Toyota 4A-GE 1.6 L 16V (first generation, small-port)

Power

81 kW / 110 hp @ 6600 rpm

Primary Fitment

Toyota Conquest RSi 1986-1988

Lead OE

Toyota 04111-16020

Cross-Reference

Payen GN390 / Victor Reinz 01-52573-01

Key Benefits

• Comprehensive gasket kit for a full top-end rebuild of the 1st-generation 4A-GE 16V small-port engine - the definitive SA enthusiast 4A-GE.


• Cross-referenced to Toyota OE (04111-16020 through 04111-16023), Payen GN390, and Victor Reinz 01-52573-01 - one kit matching all major aftermarket catalogues.


• Includes cylinder head gasket, crankshaft seals, and valve stem seals in one consolidated kit - saves sourcing parts individually for a rebuild.

What's Included

• Cylinder head gasket


• Crankshaft seal (front and/or rear main)


• Valve stem seals


• Supporting top-end gaskets (rocker cover, timing cover, intake / exhaust manifold gaskets as per kit contents)

What's NOT Included

• 
  Oil sump gasket - order separately if doing a bottom-end rebuild or sump removal


• Cylinder head bolts - inspect and replace if stretched, corroded, or deformed


• Timing belt, timing belt tensioner, or water pump - service these at the same time as best practice

OEM & Cross-Reference Numbers

• 
  Toyota OE: 04111-16020, 04111-16021, 04111-16022, 04111-16023


• 
  Payen: GN390


• 
  Victor Reinz: 01-52573-01

Product Specifications

Vehicle Fitment

Includes 2 supplied applications.

Fitment Notes

• 
  Toyota Conquest vs Corolla in South Africa: The Conquest name was used for the 5-door hatchback (AE82) and the Corolla name for the sedan during this era, both with the same 4A-GE 16V engine. The RSi designation denotes the 1.6 Sport variant with the twin-cam 4A-GE. Both models share this gasket set.


• The supplier power figure is 81 kW (110 PS / 110 hp) at approximately 6,600 rpm, matching factory specification for the 1st-generation 4A-GE 16V engine.


• Always match the engine code stamped on the block: 4A-GE. Also confirm the head casting generation - the 1st-gen (1983-1987) has a 7-rib block and the small-port 16V head. If the engine has been swapped at some point in the vehicle's history, the original engine may no longer match.

Installation / Use / Maintenance Tips

• Lay out all kit contents before starting disassembly. Confirm every expected gasket and seal is present and the correct profile for your engine.


• Photograph the engine from multiple angles before teardown. For the 4A-GE specifically, document the T-VIS linkage, vacuum hose routing, and intake manifold arrangement - these can be difficult to reassemble from memory alone.


• Use a torque wrench that has been recently calibrated. Old or abused torque wrenches can be 10%+ out of specification, which is enough to cause head gasket failure.


• Work in a clean environment. Even small debris in the head gasket sealing zone can compromise the seal.


• Consider replacing the cam sensor seal, distributor O-ring, and oil pressure switch seal while the engine is apart if they look tired - they fail at similar ages and are difficult to access without dismantling.


• This is a specialist rebuild - if you are not experienced with engine assembly, consider having the work done by a workshop familiar with the 4A-GE 16V. Reputable SA specialists include several Japanese-focused performance shops.

Common Questions

Will this fit my 4A-GE engine?

Only if it is the 1st-generation 4A-GE 16V (small-port, T-VIS) as fitted to 1986-1988 SA-market Toyota Conquest RSi and Corolla RSi. It does NOT fit the 2nd-gen "Red Top" 4A-GE, 20V "Silver Top", or 20V "Black Top" variants. If your engine has been swapped at any point, verify the actual engine generation before ordering.

Is an oil sump gasket included?

No. This kit covers the cylinder head gasket, crankshaft seal, and valve stem seals plus supporting top-end gaskets. If you are doing a bottom-end rebuild or removing the sump for any reason, order a separate sump gasket.

Are head bolts included?

No. Head bolts are not part of a standard full gasket set. Inspect the bolts carefully - if they show stretching, corrosion, or thread damage, replace them. Many 4A-GE rebuilders replace head bolts as a matter of course during a rebuild.

What's the difference between the Toyota OE part numbers (04111-16020 / 16021 / 16022 / 16023)?

These are progressive head gasket revisions for the 1st-generation 4A-GE 16V - Toyota updated the gasket specification during the production run to address sealing and durability refinements. All four numbers refer to compatible gasket revisions for the same engine family. This kit matches the family.

What does the "small-port" designation mean?

The 1st-generation 4A-GE (1983-1987) has smaller intake ports in the cylinder head compared to the 2nd-generation "big-port" version (1987-1989). This difference means the head gaskets are not interchangeable between generations. The small-port head is also lower-flow but produces the characteristic 4A-GE power curve when combined with the T-VIS intake system.

What is T-VIS?

T-VIS (Toyota Variable Intake System) is a twin-stage intake manifold system fitted to the 1st and 2nd generation 4A-GE. Secondary intake runners are closed at low RPM for improved low-end torque and open above approximately 4,200 rpm for top-end power. It's a distinguishing feature of early 4A-GE engines.

How do I confirm the engine is really the 1st-gen 4A-GE?

Look for: the engine code "4A-GE" stamped on the block, a 7-rib engine block, small intake ports, T-VIS intake manifold with visible butterfly linkage, and a red valve cover with "16V" or "TWIN CAM" markings. If in doubt, send us photographs of the engine bay, cam cover, and intake manifold with your enquiry.