Whether a Caterpillar marine engine had a catastrophic failure or was nearing maintenance life, the system urges the replacement of the spares with OEM items. For instance, the marine Cat 3412 requires engine oil and filter replacement at the end of 250 hours of maintenance life. Here, the affordable Cat Reman Overhaul Kit comes to the rescue.
At Alfa Marine Spare Parts, we endeavor to offer only top-quality genuine engines and spare parts in our store gallery. Reman overhaul kits from the original manufacturer come with quality assurance that shipbuilders and repairers can rely on for various repair and servicing needs.
Here we highlight the common glitches vessel owners encounter during long-hour operations. The guide explains the importance of keeping necessary marine spare parts handy.
Cat 3412 Marine Engines – Common Problems and Solutions
We herein illustrate the 3412 marine engine model as an example. Similar technical issues occur in marine machinery across all leading brands worldwide. Filter clogging, frictional wear, and tear are part of the engine lifecycle.
#1. Engine Oil Starvation
Caterpillar engines are designed for long-lasting, outstanding performance in extreme conditions. However, severe damage can occur due to prolonged engine oil starvation.
Prime Causes
Lack of adequate lubricant oil supply causes engine oil starvation in marine engines. The lube oil supply in the required quantity eliminates the excess heat and prevents friction between the moving and stationary machine parts. Besides inadequate oil supplies, several other factors can contribute to similar incidents.
- Clogged filters are unable to collect debris from the oil flowing into the engine
- Using low-quality or inaccurate oil
- Lack of regular cleaning and maintenance
- Faulty or worn-out bearings
- Lube oil has traces of fuel and debris
The above mentioned are the prime factors contributing to engine oil starvation. There may be underlying other causes resulting in similar problems. Thorough diagnosis is recommended to detect the actual cause.
What Happens during Engine Oil Starvation
The insufficient lube oil supply primarily causes overheating in the engine and causes stress on the turbocharger. In extreme cases, this can cause warping in the bearing shells and remove the crank pin from its position. In most cases, this can destroy the crankshaft alignment, urging the replacement of the entire turbo system.
Keep the Cat Reman Engine Overhaul Kit ready and never miss the maintenance schedule. It all depends on the operation hours. Typically, this can be every 250-1000 hours of running the system on your vessel.
#2. Cylinder Liner Failure
Cat 3412 marine engine (main propulsion models) can experience complications in the cylinder liners due to a lack of maintenance. It usually happens between 1000-2000 operation hours. Here we present an overview of the underlying factors for such instances.
The cylinder liner damage often results from cavitation erosion. Using inappropriate coolant allows exposure of the cylinder liner to hazardous chemical contact. Marine engineers recommend only Cat coolants to avoid such complications. The coolant from the same manufacturers ensures the cylinder liners are completely safe when the solution contacts the surfaces. Your machine parts are completely safe even during prolonged operation in extreme conditions.
#3. Black Smoke Coming from Cat 3412 Marine Engine
Blackish fumes released from the combustion chamber are a sign of imbalance in the air-fuel mixture. When the injector induces fuel with little to no air, the excessive fuel burns inside the chamber, producing dense black smoke.
The air-fuel ratio fluctuates if there is a malfunction in the control valve or boost leaks in the air supply pipes. During regular air supply without any leaks, the inconsistency in the air-fuel ratio may occur due to a faulty or worn-out injector, allowing less air and more oil through the nozzle. Worn-out injectors can interfere with the injection timing. Irregular timing means losing power while the engine releases a lot of black smoke after each cycle.
Check the gas pipes connected from the turbocharger to the aftercooler for similar issues. Also, any blockage in the inlet pipes and valves of the turbo system and the air filters requires regular inspection. Often, oil leaking from the turbocharger can gather around the aftercooler. Heavy grease deposits on the aftercooler can restrict the airflow from the cooler.
Black smoke accumulation also results from leaks in the exhaust pipe and adjacent components. It reduces the amount of gases going into the turbocharger. Furthermore, these instances mainly occur during low power issues arising from leakages.
Where to Buy Genuine Caterpillar Marine Engine Parts
Regular maintenance and timely replacement of the faulty and worn-out parts with genuine items is the secret to keeping your Cat marine engines in fine condition for years. The OEM Cat Reman Engine Overhaul Kit offers all the spare parts you need for regular engine servicing.
Alfa Marine Spare Parts is one of the leading suppliers of genuine Caterpillar marine engines, turbo systems, spare parts, and electrical accessories. We have an extensive range of overhaul kits from Cat, Cummins, Perkins, and other renowned brands for an uninterrupted voyage for vessels of all sizes and styles.
Please scroll down to explore our store’s entire range of Cat overhaul kits. Please contact our sales team executives with the required part number if you need anything else. We are happy to arrange the item in 5-7 business days.
Buy Reman Extended Engine Overhaul Kit
Does browsing through the extensive product gallery feel overwhelming?
We did everything to cut the strenuous chores. Here is the complete list of Cat Reman Extended Engine Overhaul Kits in our product gallery, with detailed descriptions included for each package. The selection comprises a massive collection of platinum-level engine overhaul kits for different engine models. Please scroll down to find your engine’s exact match by part number; the rest is on us.
10R-7754 – Reman Extended Engine Overhaul Kit (D398)-10R-7754-Cat
10R-7752 – Reman Extended Engine Overhaul Kit (D399)-10R-7752-Cat
Cat Reman Gold+ Platinum Level Kits – What is Included?
Each OEM Cat Reman Platinum Level Engine Overhaul Kit comprises a comprehensive Gold kit components. Additionally, the package includes:
- Cat Reman cylinder heads
- Cat Reman fuel injectors
- Cat Reman water pump
- Cat Reman oil pump
- Cat Reman cylinder packs
Find your part number and visit the respective product page for further information.
20R-7824 – Cat Reman C16 (16.6:1 Compression Ratio)
20R-7823 – Cat Reman C15 (16.6:1 Compression Ratio)
20R-7822 – Cat Reman C15 (16.6:1 Compression Ratio)
20R-7821 – Cat Reman 3406E (16.6:1 Compression Ratio)
20R-7820 – Cat Reman 3406E (16.25:1 Compression Ratio)
20R-7819 – Cat Reman 3406E (16.25:1 Compression Ratio)
20R-7817 – Cat Reman 3406E (16.25:1 Compression Ratio)
20R-7816 – Cat Reman 3406E (16.25:1 Compression Ratio)
20R-7815 – Cat Reman 3406E (16.25:1 Compression Ratio)
20R-7414 – Cat Reman C15 (18.0:1 Compression Ratio)
20R-7413 – Cat Reman C15 (18.0:1 Compression Ratio)
20R-7412 – Cat Reman C15 (17.1:1 Compression Ratio)
20R-7411– Cat Reman C15 (18.0:1 Compression Ratio)
10R-9922 – Reman C13 (17.0:1 Compression Ratio)
10R-9921 – Reman C13 (17.0:1 Compression Ratio)
10R-9811 – Reman C12 (16.2:1 Compression Ratio)
10R-9810 – Reman C12 (16.0:1 Compression Ratio)
20R-1167 – Cat Reman C13 (17.0:1 Compression Ratio)
20R-0661 – Reman 3126E (16.0:1 Compression Ratio)
20R-0651 – Reman 3126B (16.1:1 Compression Ratio)
20R-0648 – Reman 3126B (16.0:1 Compression Ratio)
20R-0640 – Reman C7 (16.5:1 Compression Ratio)
20R-0639 – Reman C7 (16.5:1 Compression Ratio)
20R-0638 – Reman C7 (16.5:1 Compression Ratio)
Cat Reman 3500 Engine Overhaul Kits – Package Components
These basic reman engine overhaul kits come with 16 Cat Reman fuel injectors and 4 Cat Reman turbocharger cartridges.
Cat Reman Bronze+ Titanium Level Kits
The Caterpillar Bronze+ Titanium kits feature an extensive range of components included in the Bronze kit. Moreover, the package has the following items:
- Cat Reman long block
- 6 Cat Reman fuel injectors
- Injection Actuation Pressure (IAP) sensor
- Seals
20R-0821 – Cat Reman 3126E
20R-0806 – Cat Reman 3126E
20R-0804 – Cat Reman 3126E
20R-0799 – Cat Reman C7
20R-0798 – Cat Reman C7
20R-0797 – Cat Reman C7
Cat Reman HEUI Fuel System Kits – What is Inside the Package
Caterpillar HEUI fuel system kits are designed to keep you safe on distant voyages. Each package comes with a set of the following items:
- 6 Cat Reman fuel injectors
- Cat Reman HEUI pump
- Injection Actuation Pressure (IAP) sensor
- Hold-down bolts
- Seals
- O-rings.
*Cat C7 Reman C7 HEUI fuel system kits also comprise a harness alongside the other items.
20R-0674 – Cat Reman 3126E HEUI fuel system kit
20R-0671 – Cat Reman 3126E HEUI fuel system kit
20R-0672 – Cat Reman 3126E HEUI fuel system kit
20R-0670 – HEUI-3126E fuel system kit
20R-0669 – Reman 3126E HEUI fuel system kit
20R-0654 – Reman 3126B HEUI fuel system kit
20R-0653 – Reman 3126B HEUI fuel system kit
20R-0652 – Reman 3126B HEUI fuel system kit
20R-0643 – Reman C7 HEUI fuel system kit
20R-0642 – Reman C7 HEUI fuel system kit
20R-0641 – Reman C7 HEUI fuel system kit
Other Cat Reman Engine Overhaul Kits and Components
Alfa Marine Spare Parts offers a curated collection of Cat Engine overhaul kits for both main propulsion systems and auxiliary applications. Here are the bestseller items in this range readily available in our inventory:
20R-0043 – Reman 3512B (Marine Propulsion) top end engine overhaul kit includes 12 Cat Reman cylinder heads and 12 Cat Reman fuel injectors.
20R-0039 – Reman 3508B (Marine Auxiliary) (Petroleum Offshore Electric Emergency) top end engine overhaul kit includes 8 Cat Reman cylinder heads and 8 Cat Reman fuel injectors.
10R-9955 – Reman 3516B (Marine Propulsion) top end engine overhaul kit includes 16 Cat Reman cylinder heads and 16 Cat Reman fuel injectors.
10R-9954 – Reman 3516B (Marine Propulsion) top end engine overhaul kit includes 16 Cat Reman cylinder heads and 16 Cat Reman fuel injectors.
10R-9951 – Reman 3516B (Marine Auxiliary) (Petroleum Offshore Electric Emergency) top end engine overhaul kit includes 16 Cat Reman cylinder heads and 16 Cat Reman fuel injectors.






