CAT 1K4649 SPACER for 3512 Caterpillar Part - WSTPARTS
WSTPARTS supplies the 1K4649 SPACER, a CAT Bolt/Nut replacement part designed for Caterpillar 3512, 3306 and C175 applications. It is categorized under Bolt/Nut. Every unit is fitment-verified before dispatch. Manual reference: 3306: BASIC ENGINE, group 110-5763, page 208; 3512: AIR INLET AND EXHAUST SYSTEM, group 129-5488, page 562.
1K4649 SPACER for Caterpillar 3512 — Genuine & OEM Replacement Part
WSTPARTS supplies genuine and high-quality OEM replacement SPACER (Part # 1K4649). Designed for CAT 3512, 3306, C175 equipment.
Compatible Models
Key Features
- ✔ 100% compatible with CAT 3512, 3306, C175
- ✔ 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) | 1K4649 |
| Product Name | SPACER |
| Brand | CAT |
| Applicable Models | 3512, 3306, C175 |
| Weight | 0.09 kg |
| Condition | New (Genuine / OEM Equivalent) |
| Warranty | 12 Months |
Where This Part Fits
Every row below is a real listing of 1K4649 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 |
| 3306 | BASIC ENGINE | 110-5763 | p.208 |
| 3512 | AIR INLET AND EXHAUST SYSTEM | 129-5488 | p.562 |
| C175 | FUEL SYSTEM | 260-9350 | p.340 |
| 3306 | BASIC ENGINE | 110-5763 | p.213 |
| 3512 | ELECTRICAL AND STARTING SYSTEM | 108-5564 | p.819 |
| C175 | FUEL SYSTEM | 276-2710 | p.343 |
| 3306 | ELECTRICAL AND STARTING SYSTEM | 100-4510 | p.908 |
| C175 | FUEL SYSTEM | 279-0764 | p.353 |
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.
System Notes — AIR INLET AND EXHAUST SYSTEM
The air inlet and exhaust system covers the air cleaner housing and elements, intake piping, turbocharger, aftercooler, exhaust manifold, turbo mounting hardware and gaskets. It delivers clean, dense air and carries hot gas away. On this group, the two dominant failures are dust ingress and heat cycling: a leaking intake joint lets unfiltered air straight into the cylinders and dusts the rings in a few hundred hours, while exhaust manifold and turbo flange gaskets crack from repeated heat cycles and start whistling or sooting. Parts are replaced when boost drops, the intake tract shows dust trails past the filter, or a soot streak appears at a joint.
FAQ
Is 1K4649 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 3512.
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
