Skip to product information
SKU:
NLT1R03540
Ships for free in 2–4 business days.
Mitsubishi S4S Diesel Cylinder Head Assembly with Full Gasket Set
$679.99
In Stock
$679.99
Sale price
$679.99
Regular price
Replacement cylinder-head assembly with full gasket set for compatible Mitsubishi S4S four-cylinder industrial diesel engines.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Mitsubishi S4S industrial diesel engines with the matching head casting
- Forklifts equipped with a matching Mitsubishi S4S engine
- Generators and industrial machines using the same S4S head and gasket layout
- Replacement-engine installations identified by S4S engine data and casting details
Product Overview
Coolant loss, combustion pressure in the cooling system, low compression, a cracked casting, or severe overheating may lead to cylinder-head replacement. The block deck, cylinder walls, pistons, head bolts, cooling system, injectors, and the original cause of overheating must be inspected or the new head can fail again.
This assembly closes the cylinders and carries the S4S valvetrain, combustion, intake, exhaust, injector, glow-plug, oil, and coolant interfaces. S4S engines appear in forklifts, generators, and other industrial equipment with casting and accessory differences, so the engine name alone is not enough.
Key Features & Performance
- Cylinder-head assembly for physically matching Mitsubishi S4S engines
- Full engine gasket set supplied for the related overhaul work
- Useful after a confirmed crack, warp, valve-seat failure, or irreparable damage
- Supports industrial equipment repair without relying on the machine brand alone
Common Uses
- Replacing a cracked head after an overheating event
- Repairing compression loss traced to valves, seats, or the head casting
- Completing an S4S upper-engine overhaul
- Restoring an industrial engine after failed pressure and flatness inspection
Technical Specifications
- Product Type: Diesel Cylinder Head Assembly and Gasket Set
- Engine Family: Mitsubishi S4S four-cylinder industrial diesel
- Package: Cylinder head plus full gasket set as pictured
- Condition: New aftermarket
- Fitment Basis: Engine data plate, casting, dimensions, and passage layout
Installation & Fitment
- Record the engine serial and compare casting, valves, ports, injector and glow-plug locations
- Measure block-deck condition and piston protrusion and identify the correct head-gasket specification
- Inspect injectors, cooling system, oil supply, head bolts, and the cause of the old failure
- Use the engine manual for tightening sequence, stages, valve lash, timing, and post-start checks
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.
Model, production date, serial number, electrical or fuel-system version, dimensions, installed options, and previous repairs can affect fitment. Compare the original part and application information before purchase.
Frequently Asked Questions
Q: Will this fit every machine advertised with an S4S engine? A: No. Equipment makers and engine production changes can alter head castings and fittings. Match the actual engine and removed head.
Q: Does a new head solve an overheating problem by itself? A: Not if a radiator, water pump, thermostat, fan, injector, blockage, or block issue caused the overheating.
Q: How do I confirm fitment before ordering? A: Match the original reference number where available, then compare the removed part, dimensions, connections, mounting details, model, serial or production information, and package photos.
Q: Is this an original-equipment part? A: No. This is a new aftermarket part. Brand names and reference numbers are used only to identify compatible applications.
Part Summary
keywords: Mitsubishi S4S cylinder head, S4S diesel gasket set, forklift engine head replacement, S4S overheating repair, industrial diesel top end, Mitsubishi four cylinder head
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.