Bock semi-hermetic and open-drive reciprocating refrigeration compressor - spare parts supplier

Bock · HGX · FK · HG · Refrigeration Compressor

Bock Refrigeration Compressor Spare Parts. In 48 hours.

Genuine, OEM and reconditioned spares for Bock-Bock reciprocating main engines — the Bock HGX, the water-cooled FK / FK and the Bock HG — sourced beside Alang, shipped to India, UAE, Singapore & worldwide.

200+
Models indexed
3
Series: HGX / FK / X
24–48 hr
Emergency dispatch
70%
Saving on reconditioned
SCROLL

A century of diesel

From Frickenhausen 1932
to Bock.

1932

Bock founded

Robert Bock founds the company in Frickenhausen, Germany.

1960s

Open-drive recip

Bock becomes a specialist in open-drive reciprocating compressors.

1990s

HG / HGX series

The Bock HG and HGX reciprocating compressors become a transport and marine standard.

2010s

Global network

Bock builds a global refrigeration, transport and marine service network.

Today

Bock today

Wattmare keeps every Bock HGX, FK and HG refrigeration compressor running with genuine, OEM-equivalent and Alang-reconditioned spares.

Who is Bock

A German marine-power
major, Bock lineage.

Bock, of Frickenhausen, Germany, is a leading maker of reciprocating refrigeration compressors — the HGX semi-hermetic and FK / HG open-drive compressors fitted to reefer plants, transport and marine air-conditioning across the world fleet.

A single fleet can run the Bock HGX34, FK40 or the HG open-drive range — and Wattmare supplies genuine, OEM-equivalent and Alang-reconditioned spares (cylinder liners, pistons, connecting rods, suction and discharge valves, shaft seals and bearings) across every Bock refrigeration compressor.

Reconditioned Bock-Bock connecting rod, machined and inspected in India

By the numbers

Bock parts,
at depth.

0+
Models indexed
0
Model pages live
0
Wear-part types
0 hr
Emergency dispatch
0%
Max reconditioned saving

Parts we supply

Every Bock-Bock
wear part, in reach.

01

Cylinder Liners

Honed compressor cylinder liners for the full HGX and FK range, genuine and reconditioned.

02

Cylinder Heads / Valve Decks

Compressor cylinder heads and valve decks with renewed valve seats and studs.

03

Pistons

Compressor pistons matched to your exact bore and stage.

04

Piston Rings

Compression and oil-scraper ring sets, pre-profiled for HGX / FK compressors.

05

Connecting Rods

Connecting rods with renewed small- and big-end bearings and bolts.

06

Suction Valves

Complete suction valve assemblies, reeds and valve plates.

07

Discharge Valves

Complete discharge valve assemblies, springs and valve plates.

08

Crankshaft

Reground crankshafts and crankpins, balanced and crack-tested.

09

Main & Big-end Bearings

Main, big-end and small-end white-metal and shell bearings.

10

Valve Plates & Reeds

Suction and discharge valve plates, reeds, seats and springs.

11

Shaft Seal

Mechanical / rotary shaft seals and seal kits for the crankshaft.

12

Oil Pump

Crankcase oil pumps, gears and oil-pressure regulation parts.

13

Unloader / Capacity Control

Cylinder-cutoff unloaders, solenoid valves and capacity-control parts.

14

Oil Separator / Relief Valves

Oil separators, oil coolers and inter-stage safety / relief valves.

15

Gaskets & O-rings

Complete gasket, O-ring and valve-seal kits for top-overhaul.

16

Studs, Nuts & Fasteners

High-tensile cylinder-head, bearing and tie-rod studs, nuts and fasteners.

Models & specifications

Bock-Bock models
we stock parts for.

All 33 Bock-Bock reciprocating models we supply — genuine, OEM-equivalent, or Alang-reconditioned. Tap any model for an instant WhatsApp quote; can’t see yours? Send the nameplate and we’ll match it.

31 Bock-Bock reciprocating models indexed — genuine, OEM-equivalent & Alang-reconditioned. Send your exact HGX / FK / HG designation and we’ll match the part.

Which part is right?

Genuine, OEM-equivalent
or reconditioned.

Genuine Bock

Original maker
  • Price Highest
  • Lead time Days–weeks
  • Warranty OEM
  • Docs Full certificates
  • Best for Newbuild / class

OEM-equivalent

Quality aftermarket
  • Price 30–50% less
  • Lead time Days
  • Warranty Supplier
  • Docs Material certs
  • Best for Planned maint.

Reconditioned

Low-hour, ex-Alang
  • Price Up to 70% less
  • Lead time 24–48 hrs
  • Warranty 30-day, backed
  • Docs Report + photos
  • Best for Legacy HGX & emergencies

Overhaul & repair kits

Bock overhaul kits,
assembled to your model.

Send your exact HGX, FK / FK or HG designation and we assemble a complete decarbonising, top-overhaul or major-overhaul kit — cylinder liners, piston rings, discharge valves, discharge valves, shaft-seal rings, gaskets, O-rings and fasteners. Genuine or reconditioned, every kit ships with material or inspection certificates and a packing list cross-checked to your engine.

Bock overhaul kit parts - pistons, liners and rings
Kit 01

Decarbonising kit

Piston rings, discharge valves, cylinder-cover O-rings, discharge-valve grinding set and gaskets for a routine de-carb on one or all units.

Kit 02

Top-overhaul kit

Cylinder liner, piston rings, piston-crown inspection set, discharge valves, discharge valve & seat and shaft-seal sealing rings.

Kit 03

Major-overhaul kit

Full running gear — liners, crowns, rods, main / crankpin / crosshead bearings, oil pumps or water-cooled parts and complete seal and fastener sets.

Bock-Bock HGX reconditioned parts beside Alang

Inside the stockyard · 01

Bock HGX.

The valve gear-controlled HGX through HGX, including the HG open-drive range — liners, covers, piston crowns, oil pumps, chain drives and bearings, genuine and reconditioned beside Alang.

Bock FK water-cooled injection parts

Inside the stockyard · 02

Bock open-drive.

The FK and HG open-drive compressors — liners, pistons, valves and shaft seals for reefer and transport duty.

Bock HG and Bock reciprocating parts

Inside the stockyard · 03

Bock HG.

The larger Bock HG open-drive refrigeration compressors — pistons, liners, valves and complete running gear for high-capacity cooling duty.

Bock parts dispatched from India in 48 hours

Inside the stockyard · 04

Sourced in 48 hours.

Beside the world’s largest ship-recycling yard, we recover low-hour Bock-Bock parts no distributor stocks — documented, packed and airborne to your port.

Why Wattmare for Bock

Vessel down?
Airborne in 48 hours.

01

Alang sourcing

Direct access to genuine, low-hour Bock-Bock HGX and FK parts no distributor still stocks — 30–50% below European prices.

02

48-hour emergency

One WhatsApp, one photo. We confirm stock, document, pack and fly it to your port — day or night.

03

HGX & FK specialists

From obsolete Bock HGX oil pumps and chain drives to FK water-cooled units — we know the difference and stock both.

04

Class-documented

Material certificates on genuine parts; inspection and measurement reports with photos on reconditioned.

How we source & recondition

From Alang to your
engine room.

Step 01

Source from Alang

Low-hour Bock-Bock parts recovered from vessels at the world’s largest ship-recycling yard.

Step 02

Inspect & measure

Every part is dimensionally checked against OEM drawings and Bock-Bock tolerance limits.

Step 03

NDT & pressure test

Crack-detection, hardness and pressure testing on all critical liners, crowns, valves and bearings.

Step 04

Certify & dispatch

Inspection report, photos and a 30-day warranty — packed and air-freighted worldwide in 24–48 hours.

Where we deliver

Bock parts to
every major port.

Air-freighted from Alang / Bhavnagar to the world’s biggest bunkering and repair hubs in 24–48 hours. Tap a market for local lead times and ports.

Diagnose the fault

Symptom to Bock
spare part.

SymptomLikely Bock-Bock parts to inspect
Loss of compression or power on one unitCylinder liner, piston rings, piston crown
High exhaust temperature on one cylinderDischarge valve / nozzle, discharge valve spindle
Knocking or pounding from the crankcaseMain, crankpin or crosshead bearings
Excessive cylinder-oil consumptionLiner wear, piston rings, shaft-seal rings
Difficult or failed startingStarting air valve, oil pump (plunger / barrel) or rail valve
Black or smoky exhaustDischarge valve nozzles, slide valves, turbocharger interface
Oil leak at the piston-rod glandShaft seal and sealing ring set
Water in the combustion spaceCylinder head, cooling-jacket O-rings, liner

Compare the marques

Bock-Bock vs MAN B&W
vs Mitsubishi UEC.

Run a mixed fleet? We supply spare parts across all three of the great single-stage reciprocating marques — here’s how they compare and where each one fits.

Bock / Bock

HGX, FK, HG
  • Engines HGX, FK, W-X
  • Era 1982–present
  • Our depth 33 models
  • Strength Water-cooled electronic
  • This page Bock ★

MAN B&W

Most-installed reciprocating
  • Engines MC, MC-C, ME-C/B/GI
  • Era 1980–present
  • Our depth 200+ models
  • Strength Largest installed base
  • Sister page Available
MAN B&W parts →

Mitsubishi UEC

Japanese reciprocating
  • Engines UEC, UEC-LS, UEC-Eco
  • Era Legacy — present
  • Our depth Reconditioned ex-Alang
  • Strength Obsolete-part sourcing
  • Sister page Available
Mitsubishi parts →

The complete guide

Bock refrigeration compressor spare parts, explained

Wattmare is a specialist Bock refrigeration compressor spare parts supplier serving India, the UAE, Singapore and the wider global fleet. From our base in Bhavnagar — beside the Alang ship-recycling yard — we supply genuine, OEM-equivalent and reconditioned spares for every generation of Bock-Bock reciprocating marine main engine, dispatched worldwide in 24–48 hours.

The Bock-Bock lineage

The refrigeration compressors on this page are built by Bock of Frickenhausen, Germany, a compressor specialist since 1932. Its HGX, FK and HG reciprocating compressors drive reefer, transport and marine air-conditioning plants across the world fleet. We supply spares for all of them.

HGX versus FK versus HG

The single most important question on any Bock-Bock order is whether the engine is an HGX, an FK or an HG. The Bock HGX is valve gear-controlled — oil pump, fuel cam, chain drive and mechanical discharge-valve gear. The FK / FK and the Bock HG are electronically controlled, replacing the valve gear with a water-cooled supply unit, rail valves, flow-control units (FCU) and hydraulically actuated discharge valves. Liners, covers, crowns and bearings are broadly common by bore, but injection and actuation parts are entirely different — always give us your exact HGX / FK / HG designation.

Common Bock compressor wear parts we stock

For every Bock HGX, FK and HG refrigeration compressor we stock cylinder liners, pistons and piston rings, connecting rods, suction and discharge valves, valve plates, shaft seals, crankshaft and main bearings, oil pumps, gaskets and unloader parts — genuine, OEM-equivalent and Alang-reconditioned.

The Alang advantage for legacy HGX parts

Bhavnagar sits beside Alang, where hundreds of vessels are dismantled every year — including ships still running ageing Bock HGX reciprocating engines. That gives Wattmare direct access to genuine, low-hour parts that are slow or costly to source from distributors, at a fraction of new-part cost and lead time. For hard-to-find HGX oil pumps, chain drives, liners or running gear, this is the fastest source in the world. Browse our reconditioned marine spare parts range, the wider main engine spare parts category, or sister brands like MAN engine spares and Mitsubishi UEC.

How to order and what to expect

Send your Bock engine make and model with a photo or part number on WhatsApp, or use the quote form. We confirm availability and price — usually within the hour — and dispatch in-stock items within 24 hours. Typical air-freight transit is 12–18 hours to the UAE, 16–24 to Singapore, 20–26 to Greece and Turkey, and 28–36 to Northern Europe.

FAQ

Bock parts,
answered.

Do you supply Bock HGX cylinder liners?

Yes — cylinder liners are one of our strongest Bock-Bock lines. We carry original-bore and reconditioned liners for the HGX and HGX, plus the rest of the HGX range (the HGX range), honed to OEM tolerance with measurement reports. Most legacy HGX liners are recovered and reconditioned beside Alang.

What is the difference between Bock HGX, FK and HG parts?

The Bock HGX is a valve gear-controlled (mechanical) reciprocating — oil pump, fuel cam and mechanical discharge-valve actuation. The FK / FK and the Bock HG are electronically controlled, replacing the valve gear with a water-cooled supply unit, rail valves, flow-control units (FCU) and hydraulically actuated discharge valves. Liners, crowns and bearings are broadly similar by bore, but the injection and discharge-valve actuation parts are completely different — always quote your exact HGX, FK or HG model.

Which Bock compressor models do you cover?

We cover the full Bock range — the HGX series (HGX34), the FK open-drive series and the HG range — every Bock refrigeration compressor.

Are reconditioned Bock parts class-approved?

Reconditioned parts ship with inspection reports, dimensional measurements and photographs, and are accepted by class societies (Lloyd’s Register, DNV, ABS, BV, ClassNK, RINA) on survey. Genuine Bock parts carry full material and test certificates.

How fast can you deliver Bock parts to Dubai?

In-stock items dispatch within 24 hours from Bhavnagar. Typical air-freight transit to the UAE (Dubai, Jebel Ali, Fujairah) is 12–18 hours. Singapore is 16–24 hours, Greece and Turkey 20–26, and Northern Europe 28–36.

Can you supply Bock discharge valves and oil pumps?

Yes — discharge valves, injector nozzles, high-pressure oil pumps, plungers and barrels for Bock HGX engines, plus water-cooled supply units, rail valves, flow-control units (FCU) and injection equipment for FK / FK and HG engines, are stocked and bench-tested before dispatch.

What is the difference between genuine, OEM-equivalent and reconditioned parts?

Genuine parts come from the original maker (Bock / Bock) with full certificates. OEM-equivalent are quality aftermarket parts at 30–50% less. Reconditioned are low-hour parts recovered from Alang, inspected and certified to OEM tolerance, at up to 70% less with a 30-day warranty.

Do you supply obsolete Bock HGX parts no longer stocked by distributors?

Yes — obsolete Bock HGX parts are our specialty. Beside Alang we recover low-hour oil pumps, chain drives, liners, crowns and running gear from HGX-powered vessels being dismantled, then inspect and certify them. For the HGX range and HGX engines this is often the fastest source in the world.

Do you supply Bock valves and shaft seals?

Yes — suction and discharge valves, valve plates, shaft seals, cylinder liners, pistons, rings, bearings and complete overhaul kits for the Bock HGX, FK and HG compressors, genuine and Alang-reconditioned.

How do I get a price for a Bock spare part?

Send your engine model and a photo or part number on WhatsApp (+91 98252 08105), or use the quote form. We confirm availability and price, usually within the hour — whether you need genuine, OEM-equivalent, used or reconditioned parts, or a complete overhaul kit.

Where do you ship Bock parts and how are they packed?

We ship from Alang/Bhavnagar to the UAE, Dubai, Singapore, Greece, Turkey and every major port worldwide in 24–48 hours. Parts are export-packed with VCI wrapping, wooden crates and palletisation, with photos shared before dispatch and full export documentation included.

Can you supply complete Bock overhaul kits?

Yes — decarbonising, top-overhaul and major-overhaul kits assembled to your exact HGX, FK / FK or HG model, with liners, piston rings, discharge valves, discharge valves, shaft-seal rings, gaskets, O-rings and fasteners included.

Bock engine room - request a spare parts quote

Request a quote · reply within the hour

One message
away.

Emergency Bock failure, dry-dock overhaul, or a long-term pipeline — send your engine and part, and a founding partner replies on WhatsApp, usually within the hour. Genuine, OEM, used or reconditioned.

Wattmare — Bhavnagar, Gujarat, India, beside the Alang ship-recycling yard. Genuine, OEM & reconditioned Bock-Bock spares, worldwide in 24–48 hours.

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