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4955416 4941138 3802919 Piston Ring Set for Cummins B3.3 QSB3.3 4-Cylinder Engine | RJT PARTS
RJT PARTS 4955416, 4941138, 3802919 piston ring set is a 4-cylinder, 95mm bore high-precision aftermarket replacement part for Cummins B3.3 and QSB3.3 diesel engines. Adopting professional ductile iron and steel ring structure with premium surface treatment, this ring set features stable sealing, low oil consumption and strong wear resistance, fully compliant with OEM standards for construction machinery engine overhaul and repair.
Product Overview
4955416, 4941138, 3802919 piston ring set is a 4-cylinder, 95mm bore replacement part tailored for Cummins B3.3 and QSB3.3 diesel engines. It adopts standard size 95*2.5+2+3/SR oil with graded ring structure, including ductile iron compression rings and chrome-plated steel oil rings. Professional chrome plating and phosphating surface treatments deliver excellent wear resistance and stable sealing performance.
This ring set features a professional three-stage structure: ductile iron ladder barrel top ring with chrome-plated bright belt and phosphating finish, alloy taper second ring with phosphating treatment, and durable chrome-plated steel oil ring. It effectively stabilizes cylinder pressure, reduces blow-by gas and eliminates engine oil burning and blue smoke, achieving reliable engine operation for long-term mechanical use.
Technical Specifications
Item | Specification |
Part Number | 4955416 / 4941138 / 3802919 |
Brand | RJT PARTS |
Product Type | 4-Cylinder Full Piston Ring Set (Compression + Oil Control Ring) |
Applicable Engine | Cummins B3.3, QSB3.3 4-cylinder Diesel Engine |
Processing Technology | High-precision cutting, surface hardening, anti-scuff coating treatment |
Key Performance | Wear-resistant, high temperature resistant, low friction, tight air tightness |
Fit Standard | 100% OEM standard size, direct replacement |
Quality Grade | Premium aftermarket engine replacement parts |
Numbers of Cylinder | 4 Cylinders |
MOQ | 1 Set |
Stock Status | In stock, fast global delivery |
Application Industry | Construction Machinery, Engineering Equipment |
Core Advantages
- Premium Structural Design: Matches 95mm bore, 95*2.5+2+3/SR oil standard size. Graded ductile iron, alloy and steel ring combination realizes layered sealing and precise oil control.
- Advanced Surface Treatment: Adopts chrome plating and phosphating process, effectively anti-scuff and anti-corrosion, greatly improving high-temperature wear resistance and service life.
- Stable Sealing Performance: OEM precise size ensures tight fitting, maintains stable cylinder pressure and keeps consistent engine power output.
- Low Oil Consumption: High-precision steel oil ring efficiently scrapes excess oil, solves oil burning and blue smoke problems, reduces operating costs.
- Zero-mod Installation: Fully compliant with OEM standards, direct replacement for 4-cylinder B3.3/QSB3.3 engine overhaul and maintenance.
- Cost-effective Quality: RJT PARTS factory direct supply with strict inspection, stable stock and reliable after-sales support.
Application & Compatible Models
Core Applicable Engine: 4-cylinder Cummins B3.3 / QSB3.3 diesel engine
Applicable Equipment Scenarios
- 4-cylinder Cummins B3.3/QSB3.3 engine excavators
- Construction loaders and skid steer loaders
- Engineering forklifts and compact construction machinery
- Matching engine power equipment and auxiliary engineering machinery
Application Features: Ideal for routine maintenance, medium repair and major overhaul of 4-cylinder B3.3/QSB3.3 engines, solving oil burning, power drop and poor sealing problems effectively.
FAQ
- Q: What engine does 4955416 4941138 3802919 piston ring set fit? A: It is specially designed for 4-cylinder Cummins B3.3 and QSB3.3 diesel engines for construction machinery.
- Q: Is this piston ring set OEM exact replacement? A: Yes, all dimensions and parameters comply with OEM standards, direct replacement without any modification.
- Q: What faults can this new piston ring set fix? A: It solves engine oil burning, blue smoke, low cylinder pressure, power loss and excessive blow-by gas issues.
- Q: Does RJT PARTS support small order and fast delivery? A: Yes, in stock available, 1 set MOQ is supported with fast worldwide shipping.
- Q: What is the quality guarantee policy? A: Every set is strictly inspected before shipment with stable performance, supporting standard after-sales quality guarantee.
