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PISTON CROWN Marine Engine Spare Parts is a critical core combustion chamber component for marine engine systems. Made of high-quality heat-resistant, wear-resistant and corrosion-resistant materials, it bears high temperature and pressure during combustion and transmits power steadily. It features precise dimensional accuracy, stable structural performance and excellent thermal fatigue resistance, suitable for routine servicing, shipyard overhaul and fault repair under marine harsh working conditions. A well-matched piston crown stabilizes engine power output, prevents thermal deformation and cylinder damage failure, reduces component failure risks and equipment downtime, and ensures efficient and reliable operation of marine engine units. Please provide equipment model, specifications and part number before ordering to confirm compatibility.
PC2-6 Piston Crown | Ship Main Engine Spare Parts
The PC2-6 Piston Crown is a heavy-duty high-temperature core component exclusively designed for PC2-6 series marine main engines. As the top heat-bearing part of the piston assembly, it directly bears high explosion pressure and radiant heat inside the combustion chamber during engine operation. It forms the combustion space together with cylinder cover and liner, transferring heat to the piston cooling medium while converting gas pressure into mechanical power. If the piston crown suffers thermal cracking, surface ablation, corrosion or wear of ring grooves, it will lead to piston ring sticking, gas blow-by, reduced compression pressure and abnormal thermal load, which may trigger serious engine failure during sea voyage. Replacing with standard PC2-6 piston crown restores original combustion chamber structure and heat dissipation performance, ensuring stable and safe operation of the main engine.
Working under harsh marine operating conditions including long-term full-load navigation, cyclic explosion impact, high temperature and heavy fuel corrosion, the piston crown will gradually develop ring groove wear, thermal fatigue cracks and surface ablation after long service hours. Damaged piston crown causes poor cylinder sealing, rising exhaust temperature and accelerated wear of cylinder liner and piston rings. Regular inspection and replacement of piston crown are essential items for main engine overhaul and dry dock maintenance.
This precision PC2-6 piston crown adopts optimized cooling gallery structure and reasonable wall thickness design. It realizes efficient internal cooling to reduce thermal stress, resisting repeated thermal shock and explosion impact under variable load working conditions. The ring groove area is reinforced to maintain stable fitting clearance with piston rings and minimize gas leakage.
With outstanding high-temperature strength and corrosion resistance, it withstands erosion and vanadium corrosion from heavy fuel combustion ash. Reliable structural performance stabilizes cylinder working condition, reduces risk of thermal crack and ablation, greatly improving operational safety and long-cycle stability of PC2-6 main engines for ocean-going vessels, bulk carriers and container ships.
This PC2-6 dedicated piston crown is manufactured from premium heat-resistant cast alloy, customized for the high pressure and high temperature combustion environment of PC2-6 marine main engines. The internal cooling channel is precision cast and processed; the top surface and ring grooves are finely machined to strict dimensional tolerance. The whole manufacturing process follows OEM technical requirements and universal marine diesel industry specifications, ensuring excellent heat dissipation performance and long service life.
Quantified Marine-Grade Performance Parameters
Parameter | Specification | Test & Implementation Standard |
Material | Heat-resistant cast alloy | Raw material spectrum inspection |
Surface Treatment | Precision machining, surface finishing | Metallographic & hardness test |
Dimensional Tolerance | Precision tolerance for ring grooves, outer diameter & cooling gallery | CMM full dimensional inspection |
Heat Dissipation Performance | Optimized internal cooling passage for stable heat transfer | Hydraulic pressure leak test |
Working Temperature Range | High temperature resistance for combustion chamber | Thermal fatigue endurance test |
Service Feature | Anti-thermal cracking, wear-resistant, fuel ash corrosion resistant | Marine heavy fuel adaptability test |
Compliance Standard | Universal marine industrial manufacturing specifications | General marine diesel engine industry norms |
All PC2-6 piston crowns are manufactured strictly in accordance with OEM engineering drawings and marine piston component standards. Each crown undergoes raw material verification, casting, heat treatment and multi-step precision machining. Finished products will be tested for dimension, hydraulic tightness, hardness and metallographic inspection.
Every finished piston crown passes full pre-delivery inspection. All dimensions match original specifications, supporting direct drop-in replacement, improving overhaul efficiency and ensuring reliable combustion and heat dissipation of engine cylinder.
MAIN ENGINE | MAN B&W | S26MC,L/S35MC,L/S42MC,L/S50MC,L/S60MC,L/S70MC,L/S80MC,L/S90MC,S46MC-C,S50MC-C,S60MC-C,S70MC-C,S80MC-C,S90MC-C,K90MC-C,K98MC-C,K/L45GF(CA),55GF(CA),67GF(CA),80GF(CA),90GF(CA) |
WARTSILA | 6L20,9L20,8L32,R22,R32,L20,L32 | |
PIELSTICK | PC2-2,PC2-5,PC2-5L,PC2-5V,PC2-6,PA4,PA5,PA6 | |
HANSHIN | EL30-44,ELS-35,44,LH-28G,LU24-54,LUN28AR(G),LUS24-58,LF46-58 | |
NIIGATA | 16HS,16X,18CX,19HX,20AX,25BX,25CX,26AFTE,26KGHS,28AFTE,28BX,28KGHS,31EZ,31X,32CLX,34AFTE | |
SULZER | RTA38,RTA48,RTA52,RTA58,RTA62,RTA68,RTA72,RTA76,RTA84,RL(A/B)56,RL(A/B)66,RL(A/B)76, RL(A/B)90,RND68,RND76 | |
AKASAKA | A31,A34,A38,A41,A45,AH25,AH27,AH28,AH30,AH38,AH40,K28,K31,DM28FD,DM38FD,DM40FD,DM51SS | |
MITSUBISHI | UEC33LSE,UEC37LA,UEC45LA,UEC50LS,UEC52LA,UEC52LS,UEC60LS,UET45/75C,UET45/80D, UET52/90D,UET52/105H | |
AUX.ENGINE | MITSUBISHI | S6A,S6B,S6R,S6N,S16N,S16R,S12R,SA2 |
MAN B&W | 16/24,20/27,21/31,23/30,25/33,28/32,32/40,48/60,58/64 | |
YANMAR | HAL,KL,KDL,KFL,RAL,MAL,S165,S185,M200,M220,T220,T240,T260,Z280,N165,N18,N21,N165,N260,N280, N330,NY16,EY18,EY22,EY26,4CHL,6CHL | |
DAIHATSU | DK20,DK26,DK28,DK32,DL16,DL19,DL20,DL22,DL24,DL26,DL28,DL32,DS18,DS19,DS22,DS26,DS28,DS32, DS40,PK14,PK16,PL24,PL26,PS18,PS20,PS22,PS26,PS30 |
We supply full-series matching spare parts for PC2-6 main engine overhaul, including piston skirt, piston rings, piston pin, sealing rings and complete overhaul kits, offering one-stop procurement solutions for shipyards, shipping companies and marine service suppliers.
Each batch of PC2-6 piston crowns undergoes full-process inspection and performance screening, including raw material spectrum analysis, metallographic inspection, dimensional verification, hydraulic pressure test and thermal fatigue inspection. All inspection records are archived for customer review and dry-dock audit.
Manufactured in strict compliance with universal marine diesel industry norms and OEM technical specifications. This piston crown meets the demands of routine navigation and vessel overhaul projects, serving as reliable replacement accessories for marine main engines.
Piston crown is a critical heat-bearing component for PC2-6 main engine combustion chamber. Long-time high temperature, explosion impact and heavy fuel corrosion will cause thermal cracks, ring groove wear and surface ablation. Replace the piston crown during major overhaul if cracks or heavy wear are detected. Installing new standard PC2-6 piston crown restores original heat dissipation and cylinder sealing performance, protecting cylinder liner and piston assembly from severe damage.
Inspect piston crown during regular overhaul and dry dock. For vessels with long-term heavy-load operation, check ring groove condition and surface ablation. Timely replacement prevents gas blow-by and secondary damage to engine core components, securing stable and safe vessel operation.
Which engine does this piston crown fit?
This piston crown is specially customized for PIELSTICK PC2-6 marine main engines, also compatible with multiple mainstream marine main and auxiliary engine models listed above. Please provide complete engine model or original part number for accurate matching confirmation.
What is the delivery time?
Standard PC2-6 models are in stock with 7–10 working days fast delivery. Non-standard customized specifications support 7–15 working days production cycle.
Can you provide customized processing services?
Yes, we support OEM customization and non-standard processing according to customer drawings and samples. All customized products undergo full-dimensional inspection and hydraulic tightness testing before shipment.
What is your warranty policy?
12-month warranty for material and manufacturing defects. We provide professional after-sales technical support including installation guidance and fitting verification.
What is the MOQ and export packaging?
MOQ is 1 unit for in-stock products, with favorable bulk discount for fleet batch orders. Standard export packaging adopts anti-rust oil treatment, moisture-proof wrapping and solid plywood crating, adapting to long-distance ocean transportation and overseas storage.
