Perkins 4012-46TWG2A Diesel Engine for 1253/1385kVA Generator Sets

The 4012-46TWG2A is a turbocharged, air-to-water chargecooled 12-cylinder engine from the Perkins 4000 Series, distinguished from the air-to-air chargecooled 4012-46TAG2A by its liquid charge-cooling circuit — a more compact, ambient-independent cooling path suited to high-density installations. It is built for large-scale prime and standby power generation in data centers, mining, hospitals, and telecom infrastructure, available in temperate or tropical cooling configurations and in Electro unit (engine only) or ElectropaK (engine with radiator and air cleaner) builds. As part of the proven 4012 platform, it carries forward the series' component commonality and 500-hour service interval standard while offering the water-chargecooled path as an alternative to the TAG range.

4012-46TWG2A Engine Technical Specifications

4012-46TWG2A Engine Power Output

Build List & Different Versions

4012-46TWG2A Build List

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

4012-46TWG2A 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 DGK or DGKM.

Nameplate fields to record before ordering:
· Build List (e.g. DGKM8530 or DGK8530)
· 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.

4012-46TWG2A Common Replacement Parts

Full parts availability for Build List DGK / DGKM8530. 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 DGK /DGKM8530

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 (DGK /DGKM8530): 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: What's the difference between the 4012-46TWG2A and the 4012-46TAG2A?

The TWG2A uses air-to-water chargecooling while the TAG2A uses air-to-air chargecooling — different cooling technology, not a power tier distinction. The two model codes are sometimes conflated by resellers, so confirm the suffix carefully when ordering.

Q2: Should I choose temperate or tropical cooling?

Tropical cooling is designed for higher ambient operating temperatures and carries a marginally higher dry weight (5277kg vs 5260kg); temperate suits standard climate zones. Confirm your site's ambient design temperature with your distributor before ordering.

Q3: Should I choose Electro unit or ElectropaK?

ElectropaK includes the radiator and air cleaner as a complete package; Electro unit is engine-only for customers integrating their own cooling system. Most genset builders order ElectropaK for faster integration.

Q4: Are Build Lists DGKM8530 and DGKM1005 interchangeable?

Both are confirmed valid Build Lists for this model and configuration; they are not sequential revisions requiring reconciliation. Confirm which applies to your specific unit via the ESN.

Q5: How do I confirm the exact configuration of a unit before resale?

Cross-reference the Build List and ESN from the physical engine dataplate — do not rely on numbers cast into engine components, which may not reflect the final build configuration.

Q6: Do the 1500rpm and 1800rpm versions use the same Build List?

Yes — this is a dual-speed engine, and DGKM8530/DGKM1005 cover both speed configurations under a shared Build List pair.

Q7: How much part commonality exists with other 4000 Series engines?

Perkins states general component commonality across the 4000 Series family; the specific parts held in common with the TWG2A configuration have not yet been independently verified and should be confirmed via ESN cross-reference for critical components.

Q8: What's the practical difference between ordering Prime vs Standby rated units?

Prime (1253kVA) suits variable-load applications with utility power unavailable, sized for continuous duty at averaged load; Standby (1385kVA) suits backup applications with a utility source as primary power, used for limited annual hours.

Request a Quote

Provide the following for fastest response:

· Build List (DGK8530 or DGKM8530)
· Engine Serial Number (if replacing existing unit)
· Required rated speed: 1500 rpm / 1800 rpm
· Destination port and required documentation