Product Analysis: 32507-62400 Cylinder Liner for Mitsubishi Generator Set S6A / S6A2 / S6A3

1. Basic Specifications & Parameters

The Cylinder Liner 32507-62400 is a high-quality replacement component designed for Mitsubishi S6A series diesel engines commonly used in generator sets. This liner (also called cylinder sleeve) forms the inner wall of the engine cylinder, providing a durable, replaceable wearing surface for piston rings and piston skirt.

Key technical parameters:

• Part Number: 32507-62400

• Liner Type: Wet liner (directly cooled by engine coolant on its outer surface)

• Material: Centrifugal cast alloy iron (Boron alloyed) with high chrome content for wear resistance

• Hardness: HB 220–260 (Brinell hardness)

• Surface Finish: Plateau honed (Ra 0.25–0.45 μm) for optimal oil retention and ring seating

• Bore Diameter: 135 mm (exact OEM specification)

• Flange Diameter (Top): 155 mm

• Overall Length: 345 mm

• Lower OD (Sealing area) : 142 mm

• Number of O-ring grooves: 2 (lower sealing) + 1 upper groove (for fire ring / gasket)

• Coolant side treatment: Anti-cavitation coating (wax-based or tin coating)

• Weight: Approximately 14.5 kg (32 lbs) per liner

This cylinder liner is manufactured to ISO 9001:2015 standards and undergoes 100% dimensional inspection, hardness test, and hydrostatic leak test before packing.

2. Compatible Engines & Applications

The 32507-62400 cylinder liner is a direct-fit replacement for the following Mitsubishi heavy-duty diesel engines:

• Mitsubishi S6A – 6-cylinder in-line, naturally aspirated or turbocharged, used in older generator sets (80–150 kVA range) and industrial pumps.

• Mitsubishi S6A2 – Improved version with higher injection pressure, commonly found in prime power generators for construction sites, data centers, and hospitals.

• Mitsubishi S6A3 – Latest evolution of the S6A family, featuring improved cooling passages and higher power density (150–220 kVA generator sets).

Typical machinery / applications include:

• Standby and prime diesel generator sets (Mitsubishi branded or aftermarket assembled)

• Marine auxiliary engines (small fishing vessels, pleasure craft)

• Agricultural irrigation pumps

• Construction machinery (vibratory rollers, small excavators)

Always check the engine serial number and existing cylinder liner part number. This liner is not compatible with S4A, S6B, or S6R series – those require different part numbers.

3. Performance Advantages & Functional Improvements

Compared to worn or low-quality aftermarket liners, the 32507-62400 Cylinder Liner from a quality supplier like Rsolid Engine Parts offers multiple benefits:

• Extended Service Life – The boron-alloyed cast iron and high chrome content reduce ring groove wear and scuffing. Typical service life exceeds 12,000 hours under proper maintenance, 30% longer than generic cast liners.

• Superior Heat Transfer – As a wet liner, the outer wall directly contacts coolant. Our liners feature optimized outer surface texture (no casting scale) to promote nucleate boiling, lowering cylinder wall temperature by 15–20°C. Cooler operation reduces piston ring sticking and oil coking.

• Reduced Oil Consumption – The plateau honed finish (Ra ≤0.45 μm) with cross-hatch angle of 30–45° ensures rapid ring seating and excellent oil film retention, cutting blow-by and oil consumption by up to 25% compared to reconditioned liners.

• Anti-Cavitation Protection – Factory-applied anti-cavitation coating (tin or wax-based) prevents pitting on the coolant side, a common failure point in high-output generator engines running at constant load.

• Precise Dimensional Accuracy – Each liner is machined within ±0.02 mm on bore roundness and straightness. This eliminates piston slap noise and uneven ring sealing, reducing engine vibration and improving fuel efficiency by 3–5%.

• Drop-in Fitment – Matches OEM dimensions exactly. No post-machining required. Includes the correct number of O-ring grooves (2 lower, 1 upper) – though O-rings are normally ordered separately.

When replacing a worn liner, always install new piston rings, O-rings, and a cylinder head gasket to achieve full performance.

4. Why Choose Rsolid Engine Parts for Your Cylinder Liner?

Rsolid Engine Parts (website: www.rinjector.com) is your reliable partner for Mitsubishi generator engine components. Here is why professionals choose us for cylinder liner 32507-62400:

• 100% OEM Interchangeable – Our liners match Mitsubishi genuine part form, fit, and function. Every dimension is verified against original engineering drawings.

• Premium Metallurgy – We use centrifugal casting with boron, chromium, and molybdenum additions, then fully annealed to relieve casting stress – no warping after installation.

• Rigorous Quality Control – Each liner undergoes:

• Hardness test (3 points)

• Bore gauge inspection (roundness ≤0.02 mm, taper ≤0.03 mm)

• Liquid penetrant inspection for micro-cracks

• 48-hour salt spray test for anti-corrosion coating

• Competitive Price – Direct sourcing eliminates brand markup. You save 35–50% compared to genuine Mitsubishi parts without compromising reliability.

• Fast & Secure Shipping – Bulk packing available for 6-liner sets (full engine set). Express air freight for emergency orders. We ship worldwide via FedEx Priority, DHL, or sea freight.

• Expert Technical Support – Need to confirm compatibility? Contact our engine specialists via WhatsApp: +8615975376778 for instant answers. We also provide installation torque specs and break-in guidelines.

• Warranty – 12-month warranty against material and workmanship defects.

Visit www.rinjector.com or WhatsApp +8615975376778 to order cylinder liners, O-rings, full overhaul kits, or other Mitsubishi S6A / S6A2 / S6A3 engine parts.