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Caterpillar C15 Reman Long Block | 73G0B152A

Caterpillar C15 Reman Long Block | 73G0B152A

See if this fits your application
SKU: 73G0B152A
Starting from...
$14,64764
Best Price Promise!
+$6,750.00 Core Charge* *See Item Specifics below for core return criteria, if any.

These engines are custom-built to match your exact application and serial number. Price and lead times will vary.

Call 800-828-6943 or use the chat link below for an exact quote matching your ESN and application.

Condition: Remanufactured
Cross-References: 73G0B152A, 184-2649, 1842649, 189-9621, 1899621
The RF Engine Advantage
Family Operated Since 1975

Original Equipment Quality

Parts that meet or exceed OEM specifications. Guaranteed performance you can trust. Reliability built into every component.

100+ Years of Expertise

A century of collective diesel knowledge and 10+ acres of engines and engine parts, we are more than just an online reseller or call center. We know heavy-duty diesel.

Here for the Long Haul

Same location and same phone number for the last 50 years. Same commitment to getting you the right parts at the right price.

New, Reman, & Used

RF Engine offers an expansive offering of new aftermarket, remanufactured, and used engines and engine parts all under one roof.

Details

Caterpillar C15

Built to the Highest Standards

  • Every engine is completely disassembled.
  • All components cleaned and detailed.
  • All major components are machined to meet or exceed OE specifications.
  • Wear parts are replaced with 100% new.
  • Fuel Systems and Turbochargers are remanufactured and tested.
  • Long block and long block supremes are SIM tested.
  • All Drop-In engines are dyno tested on electronically controlled dynamometers.
  • Finally painted, packed and prepped for delivery.

Engine Testing: Complete Drop-In

Complete Drop-In engines are 100% dyno tested before shipment. Computer controls ensure that each engine dyno test is conducted under standard, repeatable settings. Every engine is run through a warm-up cycle; three separate cruise segments simulating light, medium, and heavy throttle conditions; maximum torque and horsepower tests; both high and low idle tests; and a black light leak detection test with dyed oil, coolant, and fuel.

Engine Testing: Long Block

Every Long Block and Long Block Supreme is SIM (simulation) tested for performance using an outside power source to rotate the Long Block or Long Block Supreme at approximately 700-800 RPMs. This allows each unit to be tested for cylinder compression, rotational torque, oil pressure, coolant pressure, noises, and interference. Units are checked with a black light to ensure no leaks. The unit is not under its own power or running on fuel at this point.


Core Return Criteria

  • 100% visual inspection
  • If there are visible holes or cracks in the block there is a 50% core charge back
  • No hidden costs or crank rotation required

Fitment Guide

Articulated Trucks (15)
Caterpillar 735 (B1N S/N Prefix)
Caterpillar 735B (L4D S/N Prefix)
Caterpillar 735B (T4P S/N Prefix)
Caterpillar 735C (LFJ S/N Prefix)
Caterpillar 740 (B1P S/N Prefix)
Caterpillar 740 (B1R S/N Prefix)
Caterpillar 740B (L4E S/N Prefix)
Caterpillar 740B (L4F S/N Prefix)
Caterpillar 740B (T4R S/N Prefix)
Caterpillar 740B (T4S S/N Prefix)
Caterpillar 770 (BZZ S/N Prefix)
Caterpillar 770G (ECM S/N Prefix)
Caterpillar 770G (ECX S/N Prefix)
Caterpillar 770G (RMD S/N Prefix)
Caterpillar 770G (TWA S/N Prefix)
Challenger Crawler Tractors (8)
Caterpillar MT835 (BAM S/N Prefix)
Caterpillar MT845 (BBP S/N Prefix)
Caterpillar MT855 (BCC S/N Prefix)
Caterpillar MT865 (BDS S/N Prefix)
Caterpillar MTC835 (816 S/N Prefix)
Caterpillar MTC845 (817 S/N Prefix)
Caterpillar MTC855 (818 S/N Prefix)
Caterpillar MTC865 (819 S/N Prefix)
Hydraulic Excavators (12)
Caterpillar 365C (ELC S/N Prefix)
Caterpillar 365C (FEN S/N Prefix)
Caterpillar 365C (GSZ S/N Prefix)
Caterpillar 365C (GWC S/N Prefix)
Caterpillar 365C (MCS S/N Prefix)
Caterpillar 365C (MCY S/N Prefix)
Caterpillar 365C (MEM S/N Prefix)
Caterpillar 365C (PAR S/N Prefix)
Caterpillar 374F (AP4 S/N Prefix)
Caterpillar 374F (AT2 S/N Prefix)
Caterpillar 374F (MFL S/N Prefix)
Caterpillar 374F (NFJ S/N Prefix)
Motor Scrapers (6)
Caterpillar 621G (DBB S/N Prefix)
Caterpillar 623G (DBC S/N Prefix)
Caterpillar 627G (DBD S/N Prefix)
Caterpillar 657G (GER S/N Prefix)
Caterpillar 657G (W1E S/N Prefix)
Caterpillar 657G (W1F S/N Prefix)
Pipelayers (2)
Caterpillar 583T (CMX S/N Prefix)
Caterpillar 587T (FAT S/N Prefix)
Road Reclaimers (1)
Caterpillar RM500 (ASW S/N Prefix)
Track-Type Tractor/Dozers (4)
Caterpillar D8T (FCT S/N Prefix)
Caterpillar D8T (J8B S/N Prefix)
Caterpillar D8T (KPZ S/N Prefix)
Caterpillar D8T (MLN S/N Prefix)
Wheel Dozers (6)
Caterpillar 824H (ASX S/N Prefix)
Caterpillar 824K (RWB S/N Prefix)
Caterpillar 825H (AZW S/N Prefix)
Caterpillar 825K (SEE S/N Prefix)
Caterpillar 826H (AWF S/N Prefix)
Caterpillar 826K (SET S/N Prefix)
Wheel Loaders (3)
Caterpillar 980H (JMS S/N Prefix)
Caterpillar 980H (MHG S/N Prefix)
Caterpillar 986H (L8S S/N Prefix)
Engines (67)
Caterpillar C15 | 6NZ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | 9NZ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | A3A ESN Prefix
6-cyl • Diesel
Caterpillar C15 | AP4 ESN Prefix
6-cyl • Diesel
Caterpillar C15 | AR2 ESN Prefix
6-cyl • Diesel
Caterpillar C15 | AT2 ESN Prefix
6-cyl • Diesel
Caterpillar C15 | B5R ESN Prefix
6-cyl • Diesel
Caterpillar C15 | BEM ESN Prefix
6-cyl • Diesel
Caterpillar C15 | C5E ESN Prefix
6-cyl • Diesel
Caterpillar C15 | CE5 ESN Prefix
6-cyl • Diesel
Caterpillar C15 | ECM ESN Prefix
6-cyl • Diesel
Caterpillar C15 | ECX ESN Prefix
6-cyl • Diesel
Caterpillar C15 | EGH ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FFH ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FFJ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FSE ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FTE ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FTH ESN Prefix
6-cyl • Diesel
Caterpillar C15 | FTJ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | GDA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | HAZ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | JAS ESN Prefix
6-cyl • Diesel
Caterpillar C15 | JEP ESN Prefix
6-cyl • Diesel
Caterpillar C15 | JJF ESN Prefix
6-cyl • Diesel
Caterpillar C15 | JKG ESN Prefix
6-cyl • Diesel
Caterpillar C15 | JRE ESN Prefix
6-cyl • Diesel
Caterpillar C15 | KRA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | L4L ESN Prefix
6-cyl • Diesel
Caterpillar C15 | L4X ESN Prefix
6-cyl • Diesel
Caterpillar C15 | L8B ESN Prefix
6-cyl • Diesel
Caterpillar C15 | L8S ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LDN ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LHX ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LNA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LWR ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LXJ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | LZA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MBN ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MBS ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MCS ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MCW ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MFL ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MG2 ESN Prefix
6-cyl • Diesel
Caterpillar C15 | MLN ESN Prefix
6-cyl • Diesel
Caterpillar C15 | N5F ESN Prefix
6-cyl • Diesel
Caterpillar C15 | NAP ESN Prefix
6-cyl • Diesel
Caterpillar C15 | NFJ ESN Prefix
6-cyl • Diesel
Caterpillar C15 | NKL ESN Prefix
6-cyl • Diesel
Caterpillar C15 | NSR ESN Prefix
6-cyl • Diesel
Caterpillar C15 | P1K ESN Prefix
6-cyl • Diesel
Caterpillar C15 | P1Z ESN Prefix
6-cyl • Diesel
Caterpillar C15 | RKS ESN Prefix
6-cyl • Diesel
Caterpillar C15 | RLA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | RMD ESN Prefix
6-cyl • Diesel
Caterpillar C15 | SNW ESN Prefix
6-cyl • Diesel
Caterpillar C15 | SWE ESN Prefix
6-cyl • Diesel
Caterpillar C15 | T1N ESN Prefix
6-cyl • Diesel
Caterpillar C15 | T4A ESN Prefix
6-cyl • Diesel
Caterpillar C15 | T4P ESN Prefix
6-cyl • Diesel
Caterpillar C15 | T4R ESN Prefix
6-cyl • Diesel
Caterpillar C15 | T4S ESN Prefix
6-cyl • Diesel
Caterpillar C15 | TRB ESN Prefix
6-cyl • Diesel
Caterpillar C15 | TWA ESN Prefix
6-cyl • Diesel
Caterpillar C15 | TXG ESN Prefix
6-cyl • Diesel
Caterpillar C15 | TXL ESN Prefix
6-cyl • Diesel
Caterpillar C15 | TXY ESN Prefix
6-cyl • Diesel
Caterpillar C15 | X4R ESN Prefix
6-cyl • Diesel
While every effort has been made to ensure the accuracy of the fitment information listed above, it is ultimately the responsibility of the installing mechanic to perform a side-by-side comparison of the replacement part with the original to verify proper fit before installation. RF Engine is not liable for labor or consequential damages resulting from incorrect application.

Warranty Information

REMANUFACTURED ENGINE LIMITED WARRANTY

WARRANTY COVERAGE PERIODS

Diesel Engines

Product Application Coverage
Complete Drop-In On Highway 2 Years / Unlimited Miles – Parts & Labor
Motorcoach / Motorhome 1 Year / Unlimited Miles – Parts & Labor
Off Highway / Industrial / Marine 1 Year / Unlimited Hours – Parts & Labor
Long Block Supreme / Long Block / Basic Long Block All Applications 1 Year / Unlimited Miles/Hours – Parts & Labor
Transit Bus 1 Year / 1,000 Hours – Parts & Labor
Short Block All Applications 1 Year / 12,000 Miles – Parts & Labor

Gasoline Engines

Product Application Coverage
Complete Drop-In On Highway Only 2 Years / Unlimited Miles – Parts & Labor

Engine Components

Product Coverage
Cylinder Heads (New or Remanufactured) 1 Year / Unlimited Miles – Parts & Limited Labor*
All Other Components 1 Year / Unlimited Miles – Parts Only

* First 6 months: total covered labor charges capped at $1,500. Second 6 months: parts coverage only, no labor.

Labor Hour Limits

  • On Highway Diesel Drop-In: 40 hours maximum
  • Transit Bus / Motorcoach / Motorhome / Marine / Off Highway / Industrial: 30 hours maximum
  • Gasoline Engines: 20 hours maximum
  • 2nd Year Coverage (Drop-In): Long Block only

LIMITED WARRANTY

The remanufacturer warrants to the purchaser and original owner that the remanufactured product will be free from defects in materials and workmanship under normal use and service for the time periods and coverage specified above. The limited warranty period commences from the date of product installation or thirty (30) days from shipment, whichever occurs first.

Subject to the coverage periods above, the exclusive remedy and sole liability, whether based on contract, warranty, tort, or any other basis, is limited at the remanufacturer's election to:

  • Replacement of any product or part found not to conform to the limited warranty, or
  • Repair of such product or part, or
  • Refund or credit of the net sales price of the defective product or part

CONDITIONS AND EXCLUSIONS

This limited warranty applies only to products sold and used in the continental United States and Canada.

To be eligible for warranty coverage:

  • A completed registration form and copy of the repair order or installation record must be received within 30 days of shipment
  • The claim and repair procedures must be followed
  • The failure must be a direct result of a defect in material or workmanship

This limited warranty excludes:

  • Damages due to accident, abuse, misuse, tampering, abnormal operating conditions, negligence, improper shipping, storage, installation, maintenance, or fluids
  • Products manufactured by others (covered only by their manufacturer's warranty)
  • Products installed, altered, modified, serviced, or repaired by non-competent facilities
  • Normal maintenance and wear items (filters, hoses, belts, fluids, gaskets, seals, etc.)
  • Glow plugs or sensors (covered for 6 months only)
  • Products with modified emissions or management systems
  • Products with tampered serial numbers or altered mileage/hours
  • Products sold or transferred to another owner (warranty is non-transferable)
  • Diagnostics or repairs incurred prior to warranty determination
  • Towing, premium freight, taxes, travel, lodging, loss of revenue, rental charges, overtime, or property damage

CLAIM AND REPAIR PROCEDURES

Prior to performing any repairs, the owner must establish that the product is within warranty coverage and file a claim. Until the remanufacturer determines there is a covered defect, all diagnostics and repairs are the owner's responsibility.

Repair facilities must:

  • Verify the product is within the warranty period and was properly registered
  • Identify and report the defect with detailed description of the complaint and cause of failure
  • Provide detailed product, owner, and application information including mileage/hours
  • Obtain authorization before proceeding with repairs
  • Facilitate return of the failed product and submit repair order within 45 days

Labor Rates: The maximum hourly labor rate for fleet-installed engines is $60/hour. The maximum hourly rate otherwise is $95/hour. Reimbursement is based on Standard Repair Times (SRTs) published in industry-recognized labor manuals.

Payment: Claims are processed only after the product has been returned, analyzed, and approved for a covered defect. Non-covered expenses are the responsibility of the owner or repair facility.

WARRANTY LIMITATIONS

THE WARRANTIES SET FORTH HERE ARE THE ONLY WARRANTIES MADE. ALL OTHER WARRANTIES ARE EXCLUDED, WHETHER EXPRESS OR IMPLIED BY OPERATION OF LAW OR OTHERWISE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

IN NO EVENT SHALL THE REMANUFACTURER BE LIABLE FOR DAMAGES OF ANY KIND, WHETHER DIRECT, INDIRECT, SPECIAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR FOR PERSONAL INJURY OR PROPERTY DAMAGES.

If a warranty claim is not pursued or acted on for over thirty (30) days, it will be closed. The warranty period remaining after repair or replacement shall be the remaining months or miles from the original installation date.

Last Updated: December 2025

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All specifications and numbers are provided for reference only and should be independently verified before use. While we guarantee our parts match their descriptions and accept returns for any discrepancies, we cannot be held liable for installation costs, modifications, or consequential damages. Questions about compatibility? Contact our parts experts at 800-828-6943, sales@dieselcranks.com, or via live chat, Mon-Fri 8am-5pm EST.

Our Best Price Promise

Found the same part somewhere else for less? Send us the link and we’ll beat that price by 5%. We’ve been doing this since 1975, and we’d rather earn your business than lose it over a few dollars.

Some restrictions apply, see Terms & Conditions for details.

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