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3959079 3943447 3932520 Piston Ring Set for Cummins ISF3.8 ISDe Engine
RJT PARTS 3959079, 3943447, 3932520 piston ring set is a high-precision aftermarket replacement part with 102mm bore and 102*2.5K+2.5+4 standard size, specially designed for Cummins ISF3.8 and ISDe diesel engines. Featuring stable sealing performance, excellent wear resistance and low oil consumption, this full piston ring set meets strict OEM standards, ideal for light truck and construction machinery engine overhaul and daily repair.
Product Overview
3959079 / 3943447 / 3932520 piston ring set is a core wearable engine component for Cummins ISF3.8 and ISDe diesel engines, widely applied on light commercial vehicles and compact construction machinery. Adopting 102mm cylinder bore and 102*2.5K+2.5+4 professional size specification, this graded ring set combines high-strength compression rings and high-efficiency oil control rings.
Manufactured by RJT PARTS with premium alloy materials and mature surface treatment technology, this piston ring set delivers outstanding high-temperature resistance and friction resistance. It effectively stabilizes cylinder pressure, reduces blow-by gas and controls engine oil consumption, solving common engine faults such as blue smoke emission and power attenuation. All products pass strict dimensional testing to ensure precise OEM fit and long-term stable operation.
Technical Specifications
Item | Specification |
Part Number | 3959079 / 3943447 / 3932520 |
Brand | RJT PARTS |
Product Type | Full Piston Ring Set (Compression + Oil Control Ring) |
Applicable Engine | Cummins ISF3.8, ISDe Diesel Engine |
Cylinder Bore | 102mm |
Standard Size | 102*2.5K+2.5+4 |
Processing Technology | High-precision cutting, surface hardening, anti-wear treatment |
Key Performance | High temperature resistant, wear-resistant, low friction, tight sealing, low oil consumption |
Fit Standard | 100% OEM standard size, direct replacement |
Quality Grade | Premium aftermarket engine replacement parts |
MOQ | 1 Set |
Stock Status | In stock, fast global delivery |
Application Industry | Light Truck, Construction Machinery, Commercial Vehicle Equipment |
Core Advantages
- Accurate Custom Size: Strictly follows 102mm bore and 102*2.5K+2.5+4 standard size, perfectly matching Cummins ISF3.8 and ISDe engine piston grooves and cylinder walls.
- Excellent Wear & Heat Resistance: Adopts high-strength alloy material and professional surface treatment, resisting high temperature and friction under long-term heavy-load operation for extended service life.
- Stable Sealing Performance: Precise dimensional tolerance maintains stable cylinder pressure, prevents pressure leakage and ensures consistent engine power output.
- Efficient Oil Control: Optimized ring structure effectively scrapes excess lubricating oil, reduces oil burning and blue smoke, and lowers vehicle operating costs.
- Reduce Common Engine Faults: Effectively inhibits blow-by gas and carbon deposition, avoiding engine jitter, power insufficiency and other daily faults.
- Direct OEM Replacement: Fully compliant with original factory standards, no modification required, easy installation for engine overhaul and routine maintenance.
- Reliable Factory Supply: RJT PARTS factory direct supply with full quality inspection, stable inventory and competitive wholesale price.
Application & Compatible Models
Core Applicable Engine: Cummins ISF3.8, ISDe series diesel engine
Applicable Equipment Scenarios
- Light trucks equipped with Cummins ISF3.8 engine
- Commercial vehicles and logistics transport vehicles
- Small excavators and compact construction machinery
- Engineering auxiliary equipment and mobile power units
Application Features: Suitable for routine maintenance, medium repair and major overhaul of Cummins ISF3.8 and ISDe engines, effectively solving oil burning, power drop and poor sealing problems.
FAQ
- Q: What engine does 3959079 3943447 3932520 piston ring set fit? A: It is specially designed for Cummins ISF3.8 and ISDe series diesel engines, widely used in light trucks and construction machinery.
- Q: What is the size specification of this piston ring set? A: Standard 102mm cylinder bore with professional size 102*2.5K+2.5+4, fully consistent with OEM parameters.
- Q: Can this ring set fix engine blue smoke and oil burning issues? A: Yes, it features excellent sealing and oil control performance, effectively solving blue smoke, oil consumption and low power faults.
- Q: Is this a direct replacement part? A: 100% OEM standard size, direct replacement without any cutting or modification.
- Q: Do you support small orders and fast delivery? A: In stock available, 1 set MOQ is supported with fast worldwide shipping and reliable after-sales service.
If you are looking for high-quality 3959079 3943447 3932520 piston ring set for Cummins ISF3.8 or ISDe diesel engine repair and overhaul, RJT PARTS is your trustworthy supplier. Our 102mm bore 102*2.5K+2.5+4 piston rings adopt premium alloy materials and strict quality control, delivering stable sealing, low oil consumption and long service life. We support retail and bulk wholesale orders with sufficient stock and fast global delivery. Contact us now to get the latest quotation and professional technical support for your vehicle and machinery maintenance!
