Perkins 4012-46TAG2A Engine for 1505–1661kVA Generator Sets

The Perkins 4012-46TAG2A is a 12-cylinder, turbocharged, air-to-air chargecooled diesel engine developed for standby and prime power generation applications, offering a dual-speed switchable configuration (1500/1800rpm) under a single Build List. The engine is fitted with individual four-valve cylinder heads and unit fuel injectors, and is controlled by an actuator and electronic governor rather than a full ECM-based electronic fuel system — commonly referred to in the industry as an "electronically governed" mechanical injection engine. It is available with temperate or tropical cooling packages, with or without fuel oil cooling, and shares component commonality with other engines in the Perkins 4000 Series family.

4012-46TAG2A Engine Technical Specifications

4012-46TAG2A Engine Power Output

Build List & Different Versions

4012-46TAG2A Build List

Both Build Lists refer to the same engine specification. The difference is production batch only — parts compatibility is identical across both designations.

4012-46TAG2A Engine - Different Versions

ZEB Power currently offers complete engines and parts for these models in the G2 power range.

Build List Identification Guide

The Build List is stamped on the engine nameplate, mounted on the rocker cover or timing case. Locate the nameplate and read the alphanumeric string beginning with DGB or DGBM.

Nameplate fields to record before ordering:
· Build List (e.g. DGBM8529 or DGB8529)
· Engine Serial Number (ESN)
· Rated speed (1500 or 1800 rpm)
Provide both the Build List and ESN when requesting a quote. This allows us to confirm exact specification match before order commitment.

4012-46TAG2A Common Replacement Parts

Full parts availability for Build List DGB / DGBM8529. Provide ESN for exact part number confirmation.

Procurement & Logistics

· Supply source: Genuine Perkins via first-tier authorised distributor
· Stock status: Confirm availability at inquiry — lead time typically 3–4 weeks
· Export documentation: Commercial invoice, packing list, bill of lading, certificate of origin available as standard
· Shipping: FCL/LCL from Shenzhen/Guangzhou/Shanghai; crating and export packaging included
· Pre-shipment: ESN + nameplate verification completed before dispatch; engine test report available on request

Warranty & After-Sales

Warranty: 12 months or manufacturer-specified hours from date of commissioning, whichever comes first

What the Warranty Does Not Cover

1.Damage resulting from incorrect installation, improper commissioning, or failure to follow the Perkins Operation and Maintenance Manual for DGB /DGBM8529

2.Wear items consumed during normal operation: filters, belts, coolant, lubricants

3.Damage caused by contaminated fuel, incorrect lubricant specification, or coolant system neglect

4.Modifications or repairs carried out by non-authorized personnel during the warranty period

5.Transit damage not reported within 3 working days of delivery — inspect all shipments on receipt and document any damage before signing

Warranty Claim Process

① Document the fault — Record engine serial number, operating hours, fault symptoms, and photographs of the affected area.

② Notify us within warranty period — Submit documentation via email or WhatsApp. Include engine serial number in the subject line.

③ Technical review — Our engineering team reviews the submission within 2 business days and advises on root cause and next steps.

④ Resolution — Depending on fault assessment: replacement parts dispatched, repair support coordinated, or engine exchange arranged. Resolution path confirmed in writing before any action is taken.

After-Sales Support

• Technical enquiries: Email / WhatsApp — 1 business day response
• Parts identification (DGB /DGBM8529): Available on request
• O&M Manual & wiring diagrams: Available on request
• Remote fault diagnosis: Email or video call

Transit Damage Protocol

Photograph damage before unpacking · Note on delivery receipt before signing · Notify us within 3 working days with photos · Do not commission a damaged unit before completing the damage report.

FAQ

Q1: Does the 4012-46TAG2A run at 50Hz or 60Hz?

This engine supports switchable dual-speed operation — 1500rpm (50Hz) or 1800rpm (60Hz) — under the same Build List (DGBM8529/DGBM1019). Confirm your alternator end and control panel frequency setting are configured to match before commissioning.

Q2: What is the fuel consumption of the 4012-46TAG2A at Prime rating?

At 1500rpm, Prime fuel consumption ranges from 199-205 g/kWh across 50-110% load; at 1800rpm, it ranges from 206-215 g/kWh.

Q3: How do I choose between temperate and tropical cooling packages?

Tropical packages are designed for higher ambient operating temperatures and add a small amount of dry weight (5690kg vs 5663kg for temperate); dimensions are identical. Selection should be based on your site's ambient temperature and installation environment rather than region alone.

Q4: How do I verify a 4012-46TAG2A engine's exact configuration before resale?

Request both the Build List (DGBM8529 or DGBM1019) and the ESN from the seller — together these confirm cooling package, fuel oil cooling option, and rated speed configuration.

Q5: Are DGBM8529 and DGBM1019 interchangeable?

Yes, they are an Original/Updated Build List pair with equivalent specifications and parts — differences are administrative (documentation revision), not mechanical.

Q6: Is the 4012-46TAG2A ECM-controlled?

No — it uses an actuator and electronic governor for fuel injection control rather than a full engine ECM. This is an important distinction to clarify with buyers who assume all modern Perkins engines are fully electronic (ECM-based), as spare parts and diagnostic approaches differ.

Q7: What generator output can the 4012-46TAG2A support?

 Prime rating: 1505kVA at 1500rpm or 1511kVA at 1800rpm. Standby rating: 1657kVA at 1500rpm or 1661kVA at 1800rpm.

Q8: What are the engine package dimensions and weight, and what alternator pairings are typical?

H x L x W: 2269 x 3915 x 2200mm for both cooling packages; dry weight 5663kg (temperate) or 5690kg (tropical). This engine is commonly paired with large-frame alternators (e.g. Stamford S7L1D-C41 class) in the 1500-1660kVA output range — confirm alternator compatibility with your chosen rated speed before finalizing the genset design.

Request a Quote

Provide the following for fastest response:

· Build List (DGB8529 or DGBM8529)
· Engine Serial Number (if replacing existing unit)
· Required rated speed: 1500 rpm / 1800 rpm
· Destination port and required documentation