Part Name: CAMSHAFT
Part Number:
Basic Info.
| Part no. | 3889876 | Material | steel |
| Type | CAMSHAFT | Manufacturer | Aftermarket, replacement and not original CAT |
| Compatibility | Caterpillar | Transport Package | Wooden box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
*We are not an authorized dealer for CATERPILLAR, and we don't represent it. Our catalog contains replacement parts manufactured with high quality standards but not Original Equipment from the Manufacturer. We use original product codes, photos or schemas only for reference purposes. The image of the product is provided as a reference and may differ in appearance from the ordered product. Use the original part number to find the parts or replacements you need.
Product Details
- Item Model：3889876
- Date First Listed：2025/11/27
- Manufacturer：Diron Parts
Product Description
- Part Number：3889876
- Part Type: CAMSHAFT
- Description: Replacement Parts CAMSHAFT C7.1 3889876 for Caterpillar, New
The 388-9876 is a premium-quality aftermarket single camshaft manufactured as a 100% direct, drop-in replacement for the genuine Caterpillar® part number 3889876 (388-9876). Precision-machined from induction-hardened 100Cr6 (52100) bearing steel and finished to exact factory specifications, this camshaft is engineered for the high-performance Caterpillar C7.1 (Acert & later Tier 4 Interim/Stage IIIB–IV) industrial diesel engine, delivering perfect valve and injector timing, maximum durability, and restored factory power and fuel efficiency.
Key Features & Benefits
- Manufactured from chilled cast iron or forged induction-hardened steel billet (same as OEM)
- All cam lobes and bearing journals precision ground and polished to < 0.25 μm Ra surface finish
- Exact OEM lobe profile and timing for both valves and unit injectors (MEUI)
- Phosphate-coated for break-in protection and long-term corrosion resistance
- 100% dimensional and hardness inspected (core hardness 52–58 HRC, lobe hardness > 58 HRC)
- Direct bolt-on – no modifications or timing adjustments required
Common Applications (Caterpillar® Compatibility)
- Engine: C7.1 (all industrial, marine auxiliary, and genset arrangements)
- Typical Machines: – Excavators: 320F, 323F, 326F, 330F – Wheel Loaders: 926M, 930M, 938M, 950M, 962M – Track-Type Tractors: D6K2, D6N – Backhoe Loaders: 420F2, 430F2 – Generator Sets: C7.1, DE200, DE250 packages
- Direct replacement for Cat® 388-9876, 335-4175 (previous numbers)
Technical Specifications
- Part Number: 388-9876 (aftermarket direct replacement)
- Number of Journals: 7
- Bearing Journal Diameter: 64.92 mm
- Cam Lift (Intake & Exhaust): OEM spec
- Injector Lobe Lift: OEM spec
- Overall Length: ~885 mm
- Weight: Approx. 28 kg (62 lb)
Important Note:
- We only provide replacement products intended for aftermarket use in the Caterpillar machinery listed above. The brand name Caterpillar is used solely as reference information to indicate compatibility and does not imply that our products are OEM.
- Note: While this description provides general information, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: FOB
Q4. How about your delivery time?
A: Generally, it will take 20 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8. How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from
ABOUT DIRON
- Factory OF DIRON
Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.
- Team OF DIRON
With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.
- Products OF DIRON
As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.
