Description
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
| Specification | Value |
|---|---|
| Kit Type | Full Gasket Set (top-end + crank seals) |
| Target Engine | Toyota 4A-GE 1.6 L DOHC 16V (1st generation, small-port, T-VIS) |
| Includes Head Gasket | Yes |
| Includes Crankshaft Seal | Yes |
| Includes Valve Stem Seals | Yes |
| Includes Oil Sump Gasket | No (order separately) |
Vehicle Fitment
Includes 2 supplied applications.
| Make | Model | Variant | Engine | Years | Power |
|---|---|---|---|---|---|
| Toyota | Conquest | 1600 RSi | 4A-GE, 1.6 Petrol DOHC 16V | 1986-1988 | 81 kW |
| Toyota | Corolla | 1600 RSi | 4A-GE, 1.6 Petrol DOHC 16V | 1986-1988 | 81 kW |
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.
The Toyota 4A-GE engine was produced in multiple generations with significantly different specifications. This gasket set fits ONLY the 1st-generation 4A-GE (16V, small-port, T-VIS) as used in 1986-1988 SA-market Conquest RSi and Corolla RSi. It does NOT fit the following later 4A-GE variants:
- 2nd-gen 4A-GE "Red Top" (1987-1989, AW11 MR2 / AE92 Corolla) - big-port head, different head gasket profile.
- 3rd-gen 4A-GE "Red Top" / 20-valve (1989-1991) - progressive updates, not cross-compatible.
- 4A-GE "Silver Top" 20-valve (1991-1995, AE101) - completely different head design with 20 valves.
- 4A-GE "Black Top" 20-valve (1995-2000, AE111) - 20-valve, different head gasket and valve stem seal specifications.
Before ordering, confirm your engine is the 1st-generation 4A-GE 16V small-port. Telltale signs: T-VIS intake system (8 additional secondary intake runners with vacuum-actuated butterflies), "small port" cylinder head (smaller intake ports than later 4A-GEs), and compression ratio around 9.4:1. If in doubt, photograph the engine and send us the picture with your VIN for verification.
- Oil sump gasket is NOT in this kit. If you plan to drop the sump (for crank inspection, oil pickup service, or bottom-end work), order a sump gasket separately before starting the job.
- Inspect cylinder head bolts for stretching, corrosion, and thread damage. Replace any suspect bolts - head bolt failure on torque-down can crack the head or block.
- Have the cylinder head pressure-tested and crack-checked by a reputable machine shop before reassembly. Skim the head face only if warpage exceeds manufacturer tolerance.
- Measure the block deck for flatness at the same time - a warped block cannot be sealed by a new head gasket alone.
- Clean all gasket mating surfaces thoroughly with a non-scouring scraper or gasket remover. Do NOT use a wire wheel or power tool on aluminium surfaces - it removes metal and prevents sealing.
- Fit the head gasket dry (no sealant) unless the gasket manufacturer specifies otherwise. Ensure the gasket is orientated correctly - markings such as "TOP" or "FRONT" indicate the installed orientation.
- Torque cylinder head bolts in the manufacturer-specified sequence and multiple stages (typically 3-4 progressive torque steps). Consult the Toyota 4A-GE workshop manual for exact torque figures and sequence.
- Replace the timing belt, timing belt tensioner, water pump, and cam seals at the same time - these all require the timing cover to be removed during head service, and the labour cost to replace them is minimal while you're already there.
- Fit valve stem seals carefully using the correct tool - avoid damaging the seal lip on the valve guide edge during installation.
- Run the engine through a careful break-in cycle after reassembly. Check for leaks, re-torque where applicable, and verify oil pressure and cooling system operation on initial start-up.
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.