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Description
Derale Perf Deluxe Adjustable Controller with Pipe Threaded Probes # DER-16749Derale Perf Deluxe Adjustable Controller with Pipe Threaded Probes # DER 16749 Fan Control, Thermostatic, Adjustable, 150 to 240 Degrees, Kit Thermal Switch Style: Fan control kit Sending Unit Style: Thread in Sending Unit Included: Yes Sending Unit Thread Size: 3 8 18 NPT Fan Quantity: Single Dual Adjustment Range (F): 150 240 degrees F Relay Included: Yes Wiring Harness Included: Yes Manual Override Switch Included: No Air Conditioning Relay
Derale Perf Deluxe Adjustable Controller with Pipe Threaded Probes # DER-16749Fan Control, Thermostatic, Adjustable, 150 to 240 Degrees, Kit
Thermal Switch Style:Fan control kit
Sending Unit Style:Thread-in
Sending Unit Included:Yes
Sending Unit Thread Size:3/8-18 NPT
Fan Quantity:Single/Dual
Adjustment Range (F):150-240 degrees F
Relay Included:Yes
Wiring Harness Included:Yes
Manual Override Switch Included:No
Air Conditioning Relay Included:No
Quantity:Sold as a kit.
Notes:40/60 amp relay with air conditioning override circuit. Includes 30 amp fuse. Fan amperage is critical with this unit, most dual fans with large amperage draws will require the use of two relays.
Derale deluxe adjustable fan controllers with pipe-threaded probes are installed in water jackets in the intake manifold or engine block. They allow fan activation to adjust between 150 and 240 degrees F. These fan controllers are suitable for race and street rod applications. For underhood cooling components, trust the expertise of Derale Performance.
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4.0 ★★★★★
Based on 493 reviews
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Product Reviews
★★★★★ 5
Great book!
Format: Paperback
Wonderful, helpful, insightful. Points out many of the key "sore spots" that can sour a marriage if left unmanaged, and how to address them. Very helpful, whether as a premarital counseling book, a book for the happily married couple, or even for the unhappily married couple willing to set their relationship right. Must read!
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Reviewed in the United States on February 10, 2026
★★★★★ 5
Great buy
Format: Paperback
Good read.
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Good discussion book to eliminate conflict between couples
Format: Kindle
Use this book as a checklist of things you should discuss with your partner - especially if you're considering or are in a long-term relationship. It explains each topic, why it's a likely source of conflict, how to prevent the conflicts, and includes questions for discussion between partners. Understanding and discussing these topics may not feel romantic and fun, and some of the conversations may be challenging for couples who aren't accustomed to such discussions. Do it anyway though because it will eliminate future conflicts before the conflicts even begin and make your relationship run smoother, last longer, and be a source of relaxation and contentment for you both. I'm speaking from experience here.
If you are new to the study of this topic, this book will be extremely valuable for you. If you've already studied interpersonal relationships, preemptive conflict resolution, and collaborative negotiation tactics, it's still a great checklist of topics to discuss with your partner. I'm on this end of the spectrum, hence 4 of 5 stars because I'm familiar with the author's other work and this book didn't contain much new content. As a compact, all-in-one, relationship discussion guide though, it's great and worth reading and having on hand for future reference for new relationships or for when new conflicts crop up.
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Reviewed in the United States on March 3, 2018
★★★★★ 5
Easy to read
Format: Paperback
Very interesting book!
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Reviewed in the United States on April 20, 2026
★★★★★ 5
Great for Everyone!
Format: Paperback
This book is very useful to prepare people for marriage and I would recommend it for teens (even if they're not in a relationship), engaged couples, and even those already married since this provides realistic information about love and that not everything in a relationship is easy. It also helps people understand and attempt to loosely preset chores around the house and understand what to do with the extra money earned that isn't needed for bills. While I was already aware and have read about the 5 love languages, that is only briefly covered in one chapter while the rest provides other information so if you already read the 5 Love Languages book understand that there is a lot more involved in this book than that concept.
The concept that I want to highlight in this book that I haven't read about before was the 5 Different Ways to Apologize. Increasingly, I think people need to be aware that what we consider to be a 'sincere apology' isn't necessarily the same as everyone else's though there are 5 of them that are fairly common. I was surprised when I found what I thought to be a sincere apology was listed word-for-word! This concept alone can be applied to anyone you socialize with and I especially recommend this piece if you are having apology problems between your friend, significant other, coworkers, and/or boss.
Teens and those single will be able to learn a lot from this book, especially to realize that people, on average, are no longer "falling in love" within two years of the relationship and I think this would help them understand that relationships take a lot of work even when it's not convenient for you. Giving them an understanding of how to be flexible when apologizing and to know that people feel loved according to different love languages will make them more aware of how to improve their friendships and relationships in the future. Finally, there is reinforcement in being willing to do chores even if they're not popular and generally establishing healthy spending habits.
I personally found this book to be thrilling and Gary Chapman successfully backs up some of his findings with Psychological research and definitions. I loved it so much that I read it in one sitting and now I'm getting my teen friends and budding couples into reading it. Awesome book; give it a try if you haven't already! (:
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Reviewed in the United States on June 30, 2016
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