Description
OEM Supercharged Pistons
Genuine Toyota 4A-GZE pistons at 81.5mm (0.5mm oversize) paired with a TP ring set for a factory-spec supercharged rebuild.
81.5mmBore (+0.5mm oversize)
4 pistonsSet quantity
77mmStroke
TP ringsRing set included
Overview
A set of four genuine Toyota OEM pistons for the supercharged 4A-GZE engine, machined to 81.5mm (a 0.5mm oversize over the 81.0mm standard bore) and bundled with a matched TP (Teikoku) piston ring set. Everything needed to rebuild the rotating assembly with factory-grade parts.
For owners rebuilding a 4A-GZE that has been bored 0.5mm oversize and who want genuine Toyota OEM pistons rather than aftermarket forged units, retaining stock supercharged reliability and drivability.
Specifications
FitmentToyota 4A-GZE (supercharged), 1.6L 16v
Bore81.5mm (0.5mm oversize; standard bore 81.0mm)
Stroke77mm
Set quantity4 pistons
ConstructionGenuine Toyota OEM piston (material — confirm)
Compression ratio8.0:1 (early) or 8.9:1 (late) - confirm your engine
Wrist pin20mm (late 8.9:1 spec) - confirm
RingsTP (Teikoku) set - approx 1.2mm top / 1.5mm second / 2.8mm oil
Part number13103-16131 (JDM 8.9:1, 0.5mm O/S) - confirm; 8.0:1 is 13103-16100
Includespistons, gudgeon pins, circlips, plus TP ring set
What's in the box
- 4 genuine Toyota 4A-GZE pistons with gudgeon pins & circlips
- TP (Teikoku) piston ring set for 4 cylinders
Fitment
ApplicationToyota 4A-GZE (supercharged)
InstallBlock must be bored/honed to suit 81.5mm; verify piston-to-wall clearance at a machine shop before fitment.
Confirm your block's current bore/oversize (81.5mm = 0.5mm over) and your compression target (8.0:1 vs 8.9:1) before ordering.
Best suited for
Supercharged rebuild
OEM-spec restoration
Engine refresh
Genuine OEM replacement pistons — suited to stock-power supercharged rebuilds, not the high-boost, high-RPM territory that calls for aftermarket forged pistons.
Fast dispatchShips in 24–48h
Genuine productAuthentic Toyota / TP
Easy returns10-day returns, unused items
Fitment helpWe'll confirm before you buy
Returns
Return within 7 days of purchase, provided the item is unused and in its original condition and packaging. Taxes are non-refundable.
We can’t take back parts that have been fitted or modified, unsealed electrical components, ECUs and sensors, opened gaskets, seals and o-rings, or clearance items. Parts we order in specifically for you can’t be returned for change of mind — we’ll tell you before you order if yours is a special order.
If a part is faulty, damaged in transit or isn’t what you ordered, we’ll put it right and cover the return shipping.
Please contact us before returning anything. Full terms are in our Refund policy.
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