Genuine Perkins 2306 2806 Series Big End Bearing Kit KRP3012 for Engine Overhaul

The big end bearing kit (also referred to as the conrod bearing kit) provides the bearing shells between the connecting rod big end and the crankshaft crankpin journal, forming the primary load-bearing interface in the reciprocating assembly. Worn or failed big end bearings typically present as audible knocking under load, falling oil pressure, or visible metal contamination in the oil. KRP3012 is the standard (STD) size kit for the Perkins 2306 series variants listed below.

List of compatible engine models

The KRP3012 is a standard-size connecting rod bearing. ZEB Power also offers two optional sizes:
KRP3012/025 — for reground crankshaft
KRP3012/050 — for reground crankshaft
If your crankshaft has been reground, measure the crankpin journal diameter before ordering. Contact us with your measurement and ESN to confirm the correct undersize variant.

More Big End Bearing Kit in stock as below

ZEB Power offers connecting rod bearings for the Perkins 403, 404, 1103, 1104, 1106, 1204, 1306, 1506, 1706, 2206, 2506, 2806, 4006, 4008, 4012, and 4016 series, among others.
If you cannot find the connecting rod bearing you need in the list, please send us the engine nameplate or part number, and we will verify it for you.

Ensure Correct Perkins Bearing Kit Before Ordering

Selecting the wrong bearing kit may cause installation issues and unexpected downtime. Before quotation, our team verifies your engine information to ensure correct compatibility.

Verification includes:

✔ Engine serial number (ESN)
✔ Engine build list
✔ Existing part number (New number)
✔ Bearing specification

Procurement and Logistics

Genuine Perkins OEM parts supplied in partnership with an authorized Perkins first-tier distributor. Stock is sourced from Perkins warehouses in China, Singapore, and the United Kingdom, enabling competitive lead times across Africa, the South Amercia, Southeast Asia, and CIS markets. Original purchase invoices and certificates of authenticity available upon request.

Sourcing

· Genuine Perkins OEM · First-Tier Distributor Partner
· Warehouse locations: China · Singapore · United Kingdom

Lead Time

· Standard: 7–10 days from order confirmation
· Urgent orders: 3–5 days subject to warehouse stock availability
· Large volume orders: contact us to discuss dedicated stock arrangement

Trade Terms

· FOB · CIF · DDP · EXW
· Payment: T/T · L/C
· MOQ: 1 unit

Export Documentation

· Commercial Invoice · Packing List · Certificate of Origin
· Additional documentation requirements: notify us at time of inquiry

Warranty and After-Sales Service

Coverage

All parts carry a 12-month warranty from the date of shipment, covering manufacturing defects in materials and workmanship. Incorrect shipments (wrong part number or specification against confirmed order) are covered in full — replacement arranged at no additional cost with return freight covered by ZEB Power.

Exclusions

Warranty does not cover:
· Normal wear and tear under operating conditions
· Damage resulting from incorrect size selection or incompatible engine configuration
· Improper installation, including failure to observe Perkins specified torque values
· Use of non-recommended lubricants or contaminated oil
· Operation outside rated parameters

Claim Process

Contact us with ESN, Build List, installation date, and a description of the issue. Photo documentation of the failed part is required. Approved claims are fulfilled by replacement; return freight is covered by ZEB Power. Replacement is dispatched upon claim approval — typically within 5 working days of assessment.

Transit Damage Protocol

Inspect packaging upon receipt. If external packaging appears intact but internal damage is found upon unpacking, photograph both the packaging and the damaged part immediately and contact us within 48 hours of delivery (including weekends and public holidays). Cases of concealed transit damage are handled on a case-by-case basis — partial compensation or subsidized replacement will be arranged subject to photo evidence and carrier assessment.

FAQ

Q1. What is Perkins KRP3012 Big End Bearing Kit?

Perkins KRP3012 is a big end bearing kit for selected Perkins 2306 and 2806 series diesel engines. It is used between the connecting rod and crankshaft and is commonly replaced during engine overhaul or crankshaft repair.

Q2. Which Perkins engines use KRP3012?

KRP3012 is used on selected Perkins 2306 and 2806 series engines, including 2306TAG1, 2306TAG2, 2306TAG3, 2806TAG1 and 2806TAG2 variants.

The correct application should be confirmed by the engine Build List and ESN before ordering.

Q3. Is KRP3012 a STD-size or undersize bearing?

KRP3012 is the STD-size big end bearing kit. For crankshafts that have been reground, an undersize bearing may be required. The crankpin journal should be measured before selecting the bearing size.

Q4. What are KRP3012/025 and KRP3012/050?

KRP3012/025 and KRP3012/050 are undersize bearing specifications for crankshafts that have been machined or reground. The correct undersize should be selected according to the actual crankpin journal measurement rather than by engine model alone.

Q5. Do I need to provide the ESN and Build List when ordering KRP3012?

Yes, providing the ESN and Build List is recommended. Different configurations can exist within the same Perkins engine family. ESN and Build List information allows the application to be checked more accurately before the order is confirmed.

Q6. What if my Perkins crankshaft has already been reground?

If the crankshaft has been reground, do not automatically order a STD KRP3012 bearing. Please provide the crankpin journal measurement and engine ESN. We can help determine whether the STD, KRP3012/025, KRP3012/050 or another specification is appropriate.

Q7. Is KRP3012 used for Perkins generator set engines?

Yes. Selected Perkins 2306TAG and 2806TAG engines using KRP3012 are commonly found in generator set applications. The engine ESN and Build List should still be checked to confirm the correct bearing application.

Q8. Is KRP3012 a genuine Perkins part?

The KRP3012 supplied by ZEB Power is offered as a genuine Perkins OEM part. For customers who require additional verification, supporting purchasing or product documentation can be provided upon request.

Q9. Can I order KRP3012 without knowing the exact bearing size?

You can send us the engine model, ESN and any available part information first. If the crankshaft has been repaired or reground, please also provide the crankpin measurement. Our team can help verify the appropriate bearing specification before quotation.

Contact For Inquiry

To receive a quote, provide the following:
ESN (Engine Serial Number) · Part Number · Quantity required · Destination port and required documentation
Quote turnaround: within 24 hours.
Not sure of your Build List or crankpin condition? Send a photo of your engine nameplate and describe the symptoms — we will confirm the correct part and size for your engine.