Features and Benefits

• Dual internal fans create cool environment for bearings and electronics
• Built in protection from water and other contaminants with dual spacers and slingers
• Multi-function regulator with environmentally sealed packard conector features auto-start and optional remote sense capability
• Smaller slip rings with higher resistance to brush bounce extend service life
• SRE cover protects electronics while managing airflow.
• Easy installation with one wire connection
• Advanced "Avalanche" design press fit diodes provide long life, protection from contaminants and electrical system spikes

The 26SI Delivers

The Delco Remy 26SI alternator provides totally sealed electronics in a brushless design, ideal for construction, off highway or harsh environmental applications.

• Totally sealed electronics
• Load dump protection
• Ample 85 Amp Performance

The Delco Remy 31SI Brush Alternator.  With 12 volt outputs of 160 or 200 amps and 24 volt at 150 amps; the 31SI can handle severe electrical loads and demands for durability.

• High performance output
• Voltage Clamp protection
• Low turn-on speed

• More output
• Corrosion protection
• Voltage clamp protection

Delco Remy’s 34SI is the answer for more output and durability in diesel powered vehicles with large electrical load requirements.  Since it is actually engineered for high vibration applications, the 34SI generates the standard of quality and performance.

• Brushless Reliability
• Load dump protection
• More outputs

The Next Generation of Reliability is Here!

Delco Remy’s 34SI QUADRAMOUNT® is a revolutionary, new mounting system.  The pad-mount construction of the 34SI QUADRAMOUNT® design provides for a more maintenance free system than traditional hinged mounting systems.  This heavy duty alternator is designed and engineered for high vibration applications, where other alternators fail.  The 34SI QUADRAMOUNT® is generating a new standard quality, value and performance.

• More Output
• Revolutionary Mounting System
• Voltage Clamp protection

Premium Brushless Design for High Temperature Applications!

The Delco Remy 35SI heavy duty alternator, designed for high underhood temperature engine applications, features heat dissipating radiant vents and thermally tolerant internal components that ensure high output in environments up to 105ºC/221ºF.  Remy Engineers have demonstrated the reliability and performance of the 35SI under these extreme heat conditions for 2,000 hours and 3,000 alternator RPM, proving this advanced unit delivers optimal output in even the most demanding underhood environments.

The all new Delco Remy 3681 heavy duty alternator combines the best of all worlds: Premium Brushless Technology, 165 amps of power, 100 amps at idle, the ability to handle the high temperature demands oftoday's emissions compliant diesel engines, all in ahigh efficiency, fuel saving design.

The high output of the 3681 alternator meets the ever increasing amperage requirements of hotel loads, exterior add on electronics and application specific electrical drains such as pick up and delivery or vocational trucks.

This performance results in superior maintenance of the batteries and electrical system reliability, supporting critical vehicle components such as the Electronic Control Unit (ECU).

• 170amps
• 110amps at idle
• Long life Brushless construction
• Rated to 105°C
• High efficiency fuel saving design

Delco Remy Premium Brushless Alternators have long offered many advantages for today’s Heavy Duty trucks. Few internal components:

no springs, brushes, or slip rings to wear out; resistance to environmental contaminants, and consistent turn-on speeds provide reliability and long-life.

In 2002, the advent of new EPA regulations required Heavy Duty diesel engine manufacturers to design new emission compliant engines. These advanced engines create higher under-hood temperatures due to re-circulation of exhaust gases prior to expelling into the atmosphere.
This challenge was answered with the Delco Remy 35SI brushless alternator that produces high output in, up to, 105°F/ 221°C under-hood temperature environments. The next challenge is the ever-increasing amperage requirements of hotel loads, exterior add-on electronics and application specific electrical drains, such as pick-up and delivery or vocational trucks, along with new anti-revving or anti-idling laws for diesel engines.

The performance of the 36SI HP with 170 amps of power, 110 amps at engine idle speeds, results in superior maintenance of the batteries and electrical system, reliability, supporting critical components.

The high efficiency design requires minimal engine horsepower to turn the alternator, increasing fuel efficiency and decreasing overall fuel costs per mile for your fleet.

Many trucks on the road today are equipped with Delco Remy 33SI, 34SI and 35SI premiums brushless alternators. The truck OEM’s and truck owners know that these products offer exceptional cost per mile benefits. To keep these trucks operating with the best charging system, it is important to maintain this specification upon replacement.

Now, in addition to the 35SI HP upgrade program, the 170 Amp -110 Amp at Idle 36SI HP with fuel-saving efficiency and heat resistant design, has been added to the upgrade program and includes a core consolidation policy. With the addition of the 36SI HP Upgrade Program, you can convert any 33SI, 34SI or 35SI to either the 35SI HP or the 36SI HP and receive full core credit for each 33SI, 34SI, or 35SI core returned.