CAT 7C1728 SEAL GP CR for 345C Caterpillar Part - WSTPARTS

WSTPARTS supplies the 7C1728 SEAL GP CR, a CAT Engine Block replacement part designed for Caterpillar 345C, 345B and 365B applications. It is categorized under Engine Block. Every unit is fitment-verified before dispatch. Manual reference: 345B: BASIC ENGINE, group 116-1091, page 31; C13: BASIC ENGINE, group 219-7469, page 210.

7C1728 SEAL GP CR for Caterpillar 345C — Genuine & OEM Replacement Part

WSTPARTS supplies genuine and high-quality OEM replacement SEAL GP CR (Part # 7C1728). Designed for CAT 345C, 345B, 365B, C13, 345D equipment.

Compatible Models

Key Features

• ✔ 100% compatible with CAT 345C, 345B, 365B, C13, 345D
• ✔ Meets Caterpillar original quality and performance standards
• ✔ Genuine CAT parts with anti-counterfeit label | OEM alternatives with warranty
• ✔ Available for order, contact for lead time

Specifications

Part Number (MPN)	7C1728
Product Name	SEAL GP CR
Brand	CAT
Applicable Models	345C, 345B, 365B, C13, 345D
Weight	0.54 kg
Condition	New (Genuine / OEM Equivalent)
Warranty	12 Months

Where This Part Fits

Every row below is a real listing of 7C1728 in the Caterpillar parts manual: the machine it is published under, the system it belongs to, the group number and the manual page. Use it to confirm the part against your own parts book before ordering.

Machine	System	Group No.	Manual Page
345B	BASIC ENGINE	116-1091	p.31
345C	BASIC ENGINE	116-1091	p.32
C13	BASIC ENGINE	219-7469	p.210
C9	BASIC ENGINE	215-1818	p.197
365B	BASIC ENGINE	142-1992	p.43
C13	BASIC ENGINE	225-9556	p.213
C13	BASIC ENGINE	225-9556	p.217
C13	BASIC ENGINE	271-7415	p.221

System Notes — BASIC ENGINE

The basic engine group covers the core structure and internals: cylinder block, cylinder head, pistons, rings, liners, connecting rods, crankshaft, bearings, camshaft and the gasket sets that seal them. These parts determine compression, oil pressure and power output. They wear gradually — rings lose tension, bearings show copper, liners glaze — and the first signs are usually blow-by from the breather, rising oil consumption, or a knock that gets louder as the engine warms. Replacing a basic engine part is a planned overhaul decision rather than a roadside fix, so matching the exact part number and serial number range matters more here than anywhere else on the machine.

FAQ

Is 7C1728 the right part for my machine?
Match the part number on your old part, or send us your equipment serial number — WSTPARTS verifies fitment free of charge for CAT 345C.

Genuine vs OEM replacement — what is the difference?
Genuine CAT parts carry an anti-counterfeit label. OEM equivalents are built to the same specifications, bench-tested and supplied with full warranty at a better price.

Stock, shipping and warranty?
Lead time confirmed on request; we quote the fastest available option. Every order is covered by a 12-month warranty.

📞 Get a Quote: Contact the WSTPARTS parts team | Email: cat@wstparts.com